Well, to make it simple, a PC's RAM, or physical memory, has a certain speed in MHz (Millions of cycles per second). In your computer, you have three RAM chips which are not built to work together. Although they CAN work together, what you'll experience is system instability and crashes. Ask your son-in-law to find you a good 256 MB chip, or better yet a 512 MB stick, and you will experience less problems, although I'm not certain this is THE problem in question. Still, 512 MB would really open up your Brycing potential, and let you add nearly any amount of extra stuff to your scenes...