This depends a lot on the volunteer office staff. The process is a straightforward one. Use our tool to extract the full VolunteerWorks database and send it to us for conversion. We return a VSys backup which VSys can restore into the SQL Server database. Most conversions take two or three passes as different organizations want their data moved into slightly different places.
Assuming that the volunteer office staff is inexperienced in this type of process, estimate one hour for the first data extraction (mostly watching it go, then uploading the results), one hour for the first results. The second and third updates will go a bit faster, figure 1/2 hour each way. There is nothing technical about the conversion process, either sending to us or putting the resultant files into VSys, it's all very well documented. If the volunteer office staff is technically savvy, you can cut the IT staff time in half, possibly more.
Data conversion: