Problem Running Multiple Apps

I'm having a problem running multiple blitz applications on a new old pentium II pc I got. I can only seem to run one 3d app at a time windowed. I can run more then 1 in full screen. If I run two apps with:
graphics3d 800,600,16,2 the second one fails.

Any idea what I can do to fix this?

edit: Running windows ME, 23 available gfxmodes, all but 24 say they work in 3d, so maybe a really crap 3d driver?
Or is their anything else I can try?

Well, this might help.

If blitz doesn't have some sort of delay in it (using the delay command), it uses ALL of your processor power. Have task manager running when you start your first blitz app to see if your program is using all of your processor power. This might explain why you can't get a second app running. This probably isn't why, though :)

Upgrading your pc... For less than $200 you can get a bare bones system and merely put your harddrive/floppy into and be on a system that will handle more..

Chances of you using a decent 3d card with a PII is slim, and thus might not allow multiple dx windowed apps running.

I went to the old used computer store, and bought an old 3dfx vodoo2 3000 card, and after a few hours of searching broken links on the web, found a driver that works with me.
And it works! woo woo!