I know its not supported but did it work for anyone in the beta? If yes, how did it run?

Well what integrated card do you have?

FOR ALL WHO WORRY ABOUT THE ABILITY TO PLAY THE GAME-I have PLAYED running on the following specs- 
AMD Sempron 1.8GHz single core 
2 GB of ram (DDR2)
Nvidia GeForce 6100 nForce 405 (integrated graphics) 256MB shared memory. 
 
So Starcraft II continues the blizzard tradition of running on everything including your toaster : D

SC2 is definitely well optimized, but if i were you, I would wait for a demo to try it out on first. And I found this too.

Didn't Blizzard say that Starcraft 2 could run on pretty old systems at some point. Don't believe it's much of a system abuser but I'm sure it needs some degree of dedicated GPU. 

" FOR ALL WHO WORRY ABOUT THE ABILITY TO PLAY THE GAME-I have PLAYED running on the following specs- AMD Sempron 1.8GHz single core 2 GB of ram (DDR2)Nvidia GeForce 6100 nForce 405 (integrated graphics) 256MB shared memory.  So Starcraft II continues the blizzard tradition of running on everything including your toaster : D "

 
I suspect it will run to some extent on most integrated gfx, you might have to turn the res and settings way down though.

Hey I was wondering the same thing, I have a HP Pavilion Slimline with ...
AMD Athlon 64 LE1620 (2.4GHz/1MB L2 cache)
integrated NVIDIA GeForce 6150 LE
2GB DDR2-667MHz dual channel SDRAM (2x1024)
250GB 7200 rpm SATA HDD
Windows Vista.
-thanks.

I think the Intel 4 series GPU should be able to handle the game with medium settings.

Does my 9400M count?  It runs it on low on OSX but in Windows I can put it up to mid and be alright.