Configuring an Airport Express w/ my router

[Mviper]

I am trying to get an Airport Express to configure on my network. I have 2 desktop pc's & and mac mini running on a Linksys router. I have spent at least 3 hrs trying to get it configured to no avail. Can anyone help me Please?

[Thaiwoo]

http://www.google.ca/search?hl=en&q=airport+express+setup+with+router&btnG=Search&meta=