I own a dell demension 4600 also i have upgraded the ram to 4 gigs, the cpu to 3.02, a nvidia geForce 6200 agp graphics card, i know i will be needing a sound card, what would you recommend. What i am looking to do is install windows 7 home premium. I seem to have all of the necessary hardware to do this install. Will I need to purchase a new copy of windows 7 home premium. I already own several other computers with windows 7 running on them. I was just wondering if it will work like when I pop an XP disc in a pc and it just lets me install windows. If its going to cost me more than 150 I would rather just let this pc live out its lifespan running what it currently is. But I don't mind overcoming a few hurdles to install 7 as long as it is not going to get too costly and the troubleshooting becomes too time consuming. Any help would be appreciated