This didn't happen - I just got the conversion wizard.
However, Due to upgrades between VS2005-VS2008 and other issues, the most recent solution was somewhere other than where I was opening it.
I found all SLN files and opened the last one I used. There were still issues, so I went to VSS anc checked in every project on teh PC
After a bit more fiddling, I managed to convert most of teh project, but 2 sub projects requried manual intervention
If it was easy, everybody would be doing it.