My computer does not recognize my wireless adapter?

i have a Acer Aspire 5515 laptop. it has AMD Athlon 2650e processor. The chipset is AMD RS690MC/SB600. My hard drive died a few weeks ago and I needed to replace it. I installed XP Home edition with SP3. Everything works except my wireless card. I use my computer for school and to play Medieval Total war. In the device Manager everything is fine except the sM Bus controller, It has a yellow question mark. I went on Acers site to look for chipset drivers and I downloaded the AMD about 100 times and it did nothing. I cant find the driver on AMD site. any suggestions