Thank you for giving me all these different avenues to approach I just recently upgraded from 1GB to 2 GB so i've done that I have a Pentuim 4 Chip  I currently have a C + G harddrive space  I've Defragged my comp a few times now  And I too  was able to listen to music run poser 5 , photoshop  and surf the web  but after awhile of using poser 6 these problems started I receive that message  you are out of virtual memory you must allocate more memory to Poser , but now I'm receiving messages on numerous programs like internet explore having to close due to C++ Error  can't open Firefox due to .exe issue etc. Someone bought up it could be a power supply issue  how due I check that? Or anyother suggestions? 
IF YOU CAN"T HELP!!! DO NOT DISCOURAGE THOSE HERE THAT ATLEAST TOOK TIME AWAY FROM TO TRY!!!!!!!!      Thanks all ,  The MeterMan