Pre-sales questions?

Is this forum the place to get pre-sales assistance?

I'm thinking of converting our machines from Oracle VirtualBox to Parallels 7.
- Is this possible to do without having to worry about re-installing and re-registering Windows Vista and without having to re-register my Windows apps? I searched the forum and found other threads where people have asked for help with VirtualBox, but the threads I looked at didn't have answers.
- At the same time, the C: drive I created for VirtualBox on one of the machines is practically full. Once I migrate the drive to Parallels, what will the process be to expand its size?


Chuck