Power Supply Scptre POWER Supply?????????

POWER Supply????????? - power supply scptre

OK, so we need a new power supply for idk my second PC, but it will work. I need min. I'm a bit of 350W to 400W for you.

Heres my PC spec. http://support.gateway.com/emachines/emac/ET1161/ET1161sp2.shtml

and here all the possible options.
http://www.bestbuy.com/site/olspage.jsp?id=abcat0507009&type=category

Thanks