You really need over 4Gb of RAM to see the difference, so the only thing you really need to do is add at least 2Gb of RAM, but preferable a lot more :-) Then 64bit will be worth it on your system.

Artwork and 3DToons items, create the perfect place for you toon and other figures!

http://www.renderosity.com/mod/bcs/index.php?vendor=23722

Due to the childish TOS changes, I'm not allowed to link to my other products outside of Rendo anymore :(

Food for thought.....
https://www.youtube.com/watch?v=pYZw0dfLmLk