Well the videocard is fine and so if I understand you I think your CPU is too. Those are the most important two. Your probably running Vista so as long has you have at least 2 Gigs of ram your fine. The monitor is going to be problem though. You see Starcraft 2 will only run on monitors that are at least 22". This is because the correct aspect ration can't be used on a 20" monitor. I'm surprised your still using a 20" in 95% of the market is using 22" or higher now. You'll defiantly have to upgrade. Oh and make sure you get a monitor that runs at 120Hz because that is also a requirement of Starcraft 2. Your shabby 20" probably only runs up to 75Hz.
I'm beginning to think people could make money if they set up a customer response service that soley answer "Can I run this?" questions. Charge 50 cents per call that could be put of the person phone bill and you'd probably make a decent profit.
• 2.2 Ghz Pentium IV or equivalent AMD Athlon processor
• 1 GB system RAM/1.5 GB for Vista and Windows 7
• 128 MB NVidia GeForce 6600 GT/ATI Radeon 9800 PRO video card
• 1024x768 minimum display resolution
Blizzard mentioned that these requirements are subject to change for the final version of the game. I doubt that it would deviate much at the end of development. More or less likely, a slight increase/decrease depending on how the development goes.
If you are able to run WoW fairly decently, you should be able to handle SC2 as well. Disregard the previous post regarding your 20" monitor. Your monitor will be fine for the game. 1024 x 768 minimum translates to a 17"+ monitor. I don't think there is a single game out that requires 22" monitors or a 120hz response rate (not even Crysis), you'll be fine with a 60-75hz LCD.
From: bum_at_large | #002 With graphics on low, its like WC3 requirements
thats a yes
Gross understatement. For the lulz, i tried it on my old PC. My old PC is a Athlon 3000, 7800 GS. Maxes WoW at 1024x768 and .... murders WC3. Guess what I get in StarCraft 2? Crappy FPS in Medium. It's only acceptable on Low. Maxing WC3 perfectly will give you low in SC2 basically.