I am new with Ubuntu but not with computers.

I have an old 32 Bite Lap Top with Win/XP OS, 1 GIG Ram, VIA/S3G Unichrome IGP (Display Adapter), 30 GIG HD
with 7 GIG free space.

Each time I try do an install of Ubuntu 10.04 LTS Lucid, I select "Try Ubuntu Without Installing" The Set Language screen
appears. English is already selected for me. I hit enter. "Try Ubuntu Without Installing" menu appears again. I hit enter.
I then get a completely black screen with just a white blinking cursor in the upper left corner. Without any intervention on
my part wavy lines appear in the center of the screen. To get out I have to Hit CTR,ALT,DEL.