I'm running WinXP on an AMD Athlon 1 gHz, with 512mb pc2100, Aopen ti4600 geforce 4. I created a scene (file is 7,466 kb) and imported a poser 4 figure. I rendered the scene twice with no problems. Immediately after rendering, I closed the file and the program. Later, I tried to reopen the file and it took about 10 minutes to load. I wasn't happy with any changes I made, so I closed the program again. Now, I can't get the file to load at all - I keep getting out of memory messages and XP informs me that it's increasing the size of the page file. The program also stops responding (during rendering) after I added the light cones to the "planet" animation tutorial on the Eovia website. (http://www.eovia.com/community/tutorials_car.jsp) I'm wondering if my computer needs to be upgraded or if there's some other cure for these problems. My motherboard will only accomodate 1gig of memory. Do I need to upgrade memory or is there something else that's going on? Any guesses or suggestions are certainly welcome - I feel like I'm learning quite a bit, but this is really frustrating. Maybe I should try a different software???