toshiba help...........

Hi all hope someone can help as pritty new at this....
Ihave a toshiba e400 pda with windows mobile 2003 se on it
it,s running tom tom 5 sat nav and a HI-203E WIRED GPS which up till now worked fine ...
One day i was installing some new software on the pda froze on me i could do nothink but re-start the pda on the re-set button eversince then the windows loaded ok the tom tom loaded ok
the HI-203E GPS well that,s somethink else i have tryed to get the drivers onto the pda but not sure how to do this, i have the install disc but it,s very un-informitive on how to set this up
i have had a few try,s but to date no luck its mabe me a bit slow.The pda will ask what name for the driver when you start up tom tom and entered a few names but still no go ..
can enybody help
thanks jc