Vista Installation Windows explorer loop

I have a Motion 1400.

I upgraded to Vista using the MS DVD.

Vista comes up but is hung up on an item.

A box appears saying that THere is a problem with Windows Explorer and that
Windows is lookng for a solution.

A minute later, a box comes up saying that the Windows explorer could not
work correctly and that Windows was closing this program.

If I do not click the cancel box, the computer seems to stop. I mean that
the clock stops.

When I click the cancel box, the process starts over again and again.

At the beginning while windows looks to correct the problem with explorer, a
box appears and asks for the original disc for Office 2003. This was
installed by the University administrator. I have an Office disc but cannot
install it on Vista. When I cancel the task, it does not reappear.

Only the Windows explorer box appears.

I am unable to access the DVD for a system install.

I backed up the tablet.

I hope that i do not have to reformat the computer and reinstall XP.

This quite disappointing. I want to use Vista for its improved handwriting
recognition.

Look forward to your wisdom.

Steve S