I have a vostro notebook, a low end build, but i love it. no probs playin WOW and great for the webs... but if you upgrade in the line to better processor, and make sure you get 2GB Ram, you should be fine.
Or if you want a desktop line, I also like Dell.. the custom build ability at decent prices is a great plus.
Also, personally, I would stick to an AMD processor, the $$ you save more than offsets the slight loss of CPU power on a comparable system.