My mac won't connect to the router.

I am very new to macs and recently bought a Macbook pro, I have connected to my router a D-Link, DSL-G604T but when I enable WEP security the mac won't connect only my PC's will. I am prompted by the mac to put in my Encryption key but it still doesn't work. I am able to to set the router to WPA-PSK but get stuck on the length of the string that I am supposed to put in? Will this set up work better?? Very stuck mac virgin, pleas help.

First, I strongly suggest that you use WPA or WPA2 instead of WEP for your wireless encryption...but if you must use WEP & work in a mixed (PC/Mac) environment...
Always use Hex characters for WEP encryption. Either 10 Hex characters (for 40-bit WEP) or 26 Hex characters (for 128-bit WEP)
If you use an ASCII password or passphrase, then use either 5 ASCII characters (for 40-bit WEP) or 13 ASCII characters (for 128-bit WEP)
Note: Because manufacturers may use different algorithms to translate between ASCII & Hex, that this doesn’t always work, and is one of the leading causes of issues with keys.
(ref: http://docs.info.apple.com/article.html?artnum=106424)

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My mac won't connect to the internet without a ethernet cable please HELP!!!!

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Back up all data before making any changes.
Step 1
Take all the applicable steps in this support article.
Step 2
If you're running OS X 10.8.4 or later, run Wireless Diagnostics and take the remedial steps suggested in the summary that appears, if any. The program also generates a large file of information about your system, which would be used by Apple Engineering in case of a support incident. Don't post the contents here.
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Make a "Genius" appointment at an Apple Store, or go to another authorized service center.
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My MacBook Pro won't connect to the Internet via wifi but it worked fine on ethernet cord...I tried running diagnostic but it didn't work:(((( it happen every time if I restart the modem and/or router.. Any idea how to fix this?

Hello Rattisate,
Sorry to hear you are not able to connect to Wi-Fi on your MacBook Pro. I would be concerned about this too. You can find information on how to troubleshoot this in the following article:
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http://support.apple.com/kb/HT4628
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Thank you for posting in the Apple Support Communities.
Best,
Sheila M.

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Hello,
Didn't realise you guys existed until I was pointed in you direction so I'm hoping you might be able to help.
I started this thread http://forums.seloc.org/viewthread.php?tid=71654 on another forum I use. It has all the details of my problem. If there is anything I should be doing it would be great If you could point me in the right direction.
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Sorry for that, I've cut and pasted the different parts that I wrote.....
I've been running a mini mac for nearly a year now and all's been well up until last friday. I use Tiscali's cheapo broadband package and that has been problem free until the mac suddenly decided that it can't connect last Friday.
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If I look at the system information then it says that ethernet (en1) is enabeld but the cable isn't connected. Tried everything I can think of but it hasn't helped. Contacted apple but they want £35 to try and talk me through the problem. Tried Tiscali but all there suggestions have made no difference.
I'm now using a six year old PC that's taken the best part of a week to get me online, I'm guessing the connection is OK as it's working on this PC but why isn't it working on the mac? Any advice will be genuinely appreciated
Tried unplugging/ re attaching all the cables but it made no difference. I'm using the same modem and cables at the moment with this dodgy old PC so I'm guessing there isn't anything wrong with them.
I do the repair permissions thing so but hasn't seemed to help.
It's a Mini Mac running OS 10.3.9 ( I think ) I use Tiscali via a phone filter and then into a sagem modem (whatever they give you). The modem is connected to the mac via a usb cable.
I've tried a different cable, and the modem is working Ok with this PC. So It's not Tiscali's end.
I've jut spent the last hour messing around with the mac but it's making no difference. The Mac knows that the USB modem is connected but it won't connect to the net. I just tried to use tiscali's DNS number but I can't seem to sort it, I even tried pinging that number but nothing is coming back. It was set up to use ethernet adaptor (en1) and then you just clicked on a little icon in the top bar and it would connect to the net.
Is there any way to wipe all the settings and try to get it going from scratch. Would it work if I bought a router and plugged it straight into the mac without a modem? There is a firewire connection on the back.
If I look back it says something about a broken pipe. On the network set up screen it says that the cable isn't connected to (en1), so I'm guessing that may be why it not getting in contact with the net?
I've now had suggestions to ditch the modem and buy a router?? Is there anything I should looking for in particular?
Thanks again.

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Thanks for your response
Let me give the history - I started with an Apple Express being fed thru a D-Link EBTR 2310 cable Router from an RCA DCM315 Modem (Pure). Comcast service all the way.
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I have just bought a Humax PVR and Humax W-Lan dongle to connect to my Airport Extreme. I have put the mac address into the AE. The installation screen is picking up my network name no problem but it won't connect to the internet. Can anyone help please?

I have just bought a Humax 7500T PVR and a Humax W-Lan dongle to connect to my Airport Extreme.
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have you made sure that the network setting in the system preferences is set up to use dhcp? if not i would try changing it so that it shows that it is getting its address by dhcp

My mac won't connect to the router.

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