The site it www.newegg.com.

This is a low cost pc and should be able to hold several copies of wow:

Code:
Gigabyte GA-P35-DS3R ($137)  
 Intel Core 2 Duo E6850 ($190)  
 2GB (2x1GB) OCZ Platinum ($59)  
 Seagate Barracuda 250GB/16MB SATA ($70)  
 Lite-On 20X DVD Burner SATA w/ Lightscribe ($36)  
 VisionTek HD 3850 512MB ($199)  
 Antec Sonata III w/ 500w PSU ($120)  
 Windows Vista Home Premium DVD OEM ($110)