wine users - Aug 2008 - changed windows ver to 3.1: now wine, winecfg & regedit hang

Greetings.

My problem is that using winecfg, I changed the Windows version to 3.1, and now
nothing wine-related will load.  The first thing I tried produced an error
message that I neglected to save anywhere, and I have not been able to reproduce
it.  Since then, every time I try to run anything wine from a launcher, nothing
seems to happen (though ps -e shows the process running), and when I try it from
the command line, it just hangs.  This includes winecfg and regedit.  So I
don't know what to do.  Can anybody help?

Thanks.