Since most dev boxes are probably running WSS and not MOSS these articles I found would probably be quite useful to read. The first walks through some of the things you should do to prepare for the export.
Transferring a site from WSS 3 to MOSS 2007 - Part 1
The second article is for times when, even though we prepared for it, we get error messages during import and don't know what to do.
Transferring a site from WSS 3 to MOSS 2007 - Part 2