so i need to install a display driver or delete the one on the computer and i cannot get in windows cuz it goes black everytime i try and it goes black also when i try to go into safe mode how

If "Last Known Good Configuration" doesn't work
You could try removing (physically taking out) any addon Video card, and test with onboard (if exists)

Or do one of these: (using a standard Windows Setup disc)

Microsoft's Windows XP Professional Repair Install step by step
http://www.windowsxpprofessional.windowsreinstall.com/sp2sp3installxpcdrepair/indexfullpage.htm

Microsoft's Windows XP Home Repair Install step by step
http://www.windowsxphome.windowsreinstall.com/sp2sp3installxpcdrepair/indexfullpage.htm

Vista Repair:
http://www.windowsreinstall.com/winvista/index.htm (index page)

last known doest work safe mode doesnt work....it goes to where you would log in windows and than is completely black but you can see the mouse
its a dell INSPIRON E1705