OT. Way OT. Xbox router recommendation needed.

I thought the board members could recommend a solution for me. I bought an Xbox Elite for my son. I have an older Linksys router WRT54GS. Does not work. Based on what I have researched, I need a wireless router that is compatable with Windows Vista or Windows 7. I am looking for low cost alternative... Need the wireless router... My older son bought a wireless adapter and got it to work... but that xbox is 2 years old now... so... I think I may need a new router. Any suggestions??? Thanks in advance.