1)   should this be connected to the router to work?  2) if connected, it interferes with other PCs on the network, and 3) should this help me print from my mac?

not familiar with macs.    whenever the airport express is connected to my router, it messes up connectivity for my PC..  bought this to be able to print to a canon pixma mp6120.  will it work for that?

How is the express connected to your router? It does have to be connected if you intend to print through it.
The best method of connection is ethernet to WAN port of the express.. assuming a new one. The worst method is wireless. When you do wireless connection it can mess up other computers. So my recommend is to test with ethernet even if the printer is not nearby and see if the problem goes away.
The Express has to be bridged.. and has to be setup to create a wireless network in this setup..
Post screenshots from the airport utility if you cannot get it to work.
The express will enable you to print over the network to a printer plugged in by USB.. mostly!! It is far from foolproof.. it is also limited in lots of ways.. ie print only in one direction.. no info from the printer will get back to the computer. It is a poor way to do things..
You should return the express and buy a wireless printer.. that is far better solution to your problem. Printers remember are cheap.. it is the ink  or toner that costs heaps.

Similar Messages

Maybe you are looking for

  • PDF, TIFF, JPG, what should I format it as?

    Ok. I am a student and I just picked up my books for the coming year. Wow, are they heavy. This may sound like a big undertaking, but I was thinking, why not scan all of the pages I will need into my computer, so I can leave the book at school? (I'll

  • SW ATE Developer - Clifton, NJ

    Hi Everyone, I have an opportunity at a company, who specializes in advanced military/space products/equipment, that could be a good fit for you. I've copied the details below. Please let me know what you think! I'm looking forward to hearing from yo

  • Components won't display over http

    Hi All, Please help this frustrated flash beginner: 1. Assuming I wish to stream over rtmp. Media server installed with /applications/bemeclient1/media folder and b.flv inside it. Set source property of video in my fla to to rtmp://localhost/bemeclie

  • MacBook Pro 15" connectivity Issue.  Everything else works great; PC's and smaller MacBooks, but everyone with a 15" model is having connection issues.

    So I have a 15" Macbook Pro.  About two months ago I started having issues connecting it on my network at work.  Every other 15" MacBook pro is having the same issue.  When the wireless connects, it often comes back with a connection timeout, or it c

  • The keyboard of my notebook is acting funny

    I bought this laptop September last so it is a bit too early for it to misbehave. Anyway, the buttons on the left side of the keyboard if typing different things.  This just happens to 1,2, q,w,a,s,z,x, caps lock, tab and escape. The thing is the let