umm. maybe i sound stupid but it could be my video card. when i install backtrack 5, i go to boot, it goes into the root terminal. i startx and it comes up to a washed out background that looks kinda like the old buntu background. with default ubuntu theme. no backtrack theme. nothing. the pentest directory is there. but no BT5 theme. any ideas ? here's my system specs:

System: Dell Dimension 8400
Cpu: X86 based CPU
Video Card : Radeon X300/X550/X1050 Series PCI BUS
Standard Ultra ATA 80 gig sata drive


any ideas ?