I've attempted to edit sys.cfg on my usb stick which is 8gb. after loading the BT5 r2 os and starting gui with startx it still going blank.

here's my sys.cfg.

Code:
default menu.c32
prompt 0
menu title UNetbootin
timeout 300

label unetbootindefault
menu label Default
kernel /ubnkern
append initrd=/ubninit file=/cdrom/preseed/custom.seed boot=casper text splash vga=791--

label ubnentry0
menu label BackTrack Text - Default Boot Text Mode
kernel /casper/vmlinuz
append initrd=/casper/initrd.gz xforcevesa noapic noapci nosplash irqpoll file=/cdrom/preseed/custom.seed boot=casper  text splash removed this portion as well vga=791-- //went to edit this one

label ubnentry1
menu label BackTrack Stealth - No Networking enabled
kernel /casper/vmlinuz
append initrd=/casper/initrds.gz file=/cdrom/preseed/custom.seed boot=casper  text splash staticip vga=791--

label ubnentry2
menu label BackTrack Forensics - No Drive or Swap Mount
kernel /casper/vmlinuz
append initrd=/casper/initrdf.gz file=/cdrom/preseed/custom.seed boot=casper  text splash vga=791--

label ubnentry3
menu label BackTrack noDRM - No DRM Drivers
kernel /casper/vmlinuz
append initrd=/casper/initrd.gz file=/cdrom/preseed/custom.seed boot=casper  text splash nomodeset vga=791--

label ubnentry4
menu label BackTrack Debug - Safe Mode
kernel /casper/vmlinuz
append initrd=/casper/initrd.gz file=/cdrom/preseed/custom.seed boot=casper  text--

label ubnentry5
menu label BackTrack Memtest - Run memtest
kernel /isolinux/memtest
append initrd=/ubninit -

label ubnentry6
menu label Hard Drive Boot - boot the first hard disk
kernel /ubnkern
append initrd=/ubninit -
Screen still hangs for me. I'm fairly newb to linux as well. I've used ubuntu just a little bit.