Vista Home Premium vs MS Access problems

This previously posted in MS Access, but informed that this probably is a
Vista problem. Trying this area, as one of the problems is Networking error.
Cannot see where else to go!

On my pc and laptop I have MS Access 2.0, 97, 2000 and 2003, because I never
know which version my customers might be using. They all work well together
up to now but when I switched my p.c. from Windows 2000 Pro to a new p.c.
with Vista Home Premium, I now have 2 recurring nightmare problems.
1 - Under Vista, Access keeps stopping without apparent reason. It says it
will find a solution but always reports back that it can't find one. Among
other times, I noticed this happening when copying a form design using Save
As. The same database will still work OK on the laptop under 2000 Pro.
Other times it happens as soon as I tried to create a vb procedure for an
Event.

2 - Where my pc and laptop were networked [both using 2000 Pro] I now can't
do so, and database objects opened on the pc get error messages "Can not
access the data - Network connection may be lost", and they are virtually
useless because of this.

Will someone with more hair than me PLEASE provide solutions to these ?
Many thanks in advance
Dave B.