IMac will not connect to LinkSys WRT54G

Greetings all:
I'm new to Macs as of about 2 hrs ago. I've been a PC geek for too long. I have a home network set up with a wired PC and a a wireless laptop PC, and I just took delivery of my new iMac. It will recognize my network (and a few others) but will not connect to it. The iMac won't connect, stating that the password is incorrect. Not really sure how to proceed. I've read through a bunch of posts, and it sounds like most people are able to connect, and then have occasional disconnects. The router is up to date re: firmware. The router is too far away from the iMac to connect an ethernet cable to.
Any suggestions are greatly appreciated.
iMac Core 2 Duo 2.33 - 2 GB Mac OS X (10.4)

Welcome to Discussions, Kayexalate!
I assume you mean that during the "Welcome" setup process you were denied access. That is always the case if you're trying to join a "closed" network. Even for other reasons it's possible to get that message. First, open the Application "Internet Connect" and set it to "Show AirPort status in menu bar" and then close and quit Internet Connect.
Use the "AirPort" beam icon in the menu bar to Turn AirPort On, and if, as you found, it will not connect - open and select "Other..." and in the box that opens, first use the "Wireless Security:" selector to duplicate your network's security method and then enter the name and password of the network. Click the "OK" button and that should allow the connection, as well as (due to the default settings in place) enter your network as a "preferred network" in the "AirPort" pane of the Network panel of System Preferences.
Message was edited by: myhighway

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IMac will not connect to LinkSys WRT54G

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