How remove stale DSN ?

Hi,

I upgraded to PG 8.1 and therfore uninstalled PG 8.0.4 and every older 
psqlODBC version from my win2000 "development"  box.

I had several DSNs for playing around that were mostly just there 
collecting dust.
Now I find that I can't open their configuration dialog nor can I delete 
them because the associated driver isn't there anymore.

Is there a way to force the removal out of Windows 2000's DSN manager ?