Is it better to reinstall from scratch to fix problems

I just posted a question about Quickbooks in XP Mode, but as I look at all that's going on with this machine, I wonder if I'd be better off going back to the fresh machine. I'd like some advice.

Some symptoms and history.

• I've had this machine for a week. Dell Vostro 3500, I5, 6Gig RAM.
• I tried to use Laplink PC Mover to move some applications and data to avoid reinstalling. I now think that was a mistake. I didn't attempt to move Office, Quickbooks, or some of my other applications with tricky licensing.
• After failures with PC Mover I tried the Windows Easy Transfer. Probably also a mistake.
• None of the applications moved with PC Mover has been without problems. For example I haven't got Nitro PDF back yet - waiting for the vendor to de-authenticate the old version as I forgot and then took the old computer to the repair shop
• Office didn't install cleanly, but after a couple of tries it is working OK except for an error about C++ on shutting down Outlook, which I used to see on the old machine.
• Updates for C++ are not working properly.
• I'm seeing a bunch of folders in the Users\All Users that seem to be applications from the old computer.

Writing down all these things seems to suggest the right answer, but if anyone cares to comment that would be great. Now I need to find a day to do another migration.

Mike

Troubleshooting fundamentals for Win7

Cleaning up factory OEM bloatware

Clean reinstalling factory OEM to get a purrfect Win7 install: http://www.sevenforums.com/installation-setup/125874-re-install-windows-7-a.html#post1086729

Thanks! Great set of things to follow. My last laptop (HP Pavilion) suffered from some of these issues that I was never able to clean up completely - including being unable to remove Vongo. I don't think the Dell Vostro has quite as much bloatware, but degunking at this stage makes sense.