Windows 7: wifi issue

I'd like to start by mentioning, I'm computer challenged. I am not up to any of your computer knowledge, PLEASE be patient.
I received an ipad for my Birthday, 3 weeks ago. I haven't been able to use it yet.
I purchased 2 wireless routers, being told a monkey could install them. This monkey returned the 1st- it HAD to be defective, wouldn't work. My newest is a Linksys E2000. After speaking with my internet provider, connection is fine. So, I called Linksys. The customer service said I don't have wifi capability. Why?? I just had this computer upgraded with windows 7, all new drivers and paid $400.00!!! How do I determine if this is correct and if it is, how do I fix the problem? When I hook up the wireless routers, it does state my computer doesn't have wifi. What are my options?? Thank you SO much!!!

Ok we need some more info

First your system specs, and network setup.


is the network like this

from ISP>>>>>>>router>>>>wifi>>>>>>computer
>>>>>>Ipad



Let us know


Ken

Here I go_Pentium dual core cpu E5300@2.60ghz, 32 bit, memory 2.00gb, hard drive has 267 gb free, adapter intel G33/G31 express chipset family, computer ACP1 by 86, 2.0 reader multi usb, 2.0 reader cf usb, wdw-ata device.

yes, router was properly hooked up. Simply says my computer isnt wifi compatible. How do I make it compatible?