Rocktooloud - upgrade to 1GB of RAM. Trust me, you'll be glad you did. With the extra RAM your system will be even more responsive and it'll be able to handle longer projects effortlessly. 512 is the bare minimum for runniong P Pro.
yourhuck- Your system looks good. What motherboard are you using? Before you install the RTX100 card, follow the WinXP tweaks on our website
http://www.videoguys.com/WinXP.html
BTW, we've got a $50 instant rebate promo going on RTX100:
RTX100 $50 INSTANT Rebate!
Just use coupon code RTX50OFF and weÂ’ll take $50 off on the RTX100 XPNS or RTX100 XPNC bundles! Plus weÂ’re still including FREE training! The Beginner's Guide to DV Production - Featuring Adobe Premiere Pro not only teaches you how to edit your video with Premiere Pro, it includes over an hour of instruction on shooting better video.
Sorry, RTX50OFF $50 INSTANT rebate is not available for upgrade or trade-ups.
http://www.videoguys.com/rtx100.html
Gary
Videoguys.com