I'm running Windows XP SP2 and I'm using a memory optimizer. heres a screen shot, the memory from task manager doesn't add up to the free memory. I have 512 MB of free memory. Can some1 help me?

http://img517.imageshack.us/my.php?image=untitledpo2.jpg

Let me guess. You have a built-in video card? It is built into your motherboard and not a separate PCI card.

Many of the motherboard video cards use your normal memory for video, which subtracts from you total available memory. That's one of the reasons I don't like built-in video, rather have all my memory available.

look under the performance tab in physical memory.