where does regedit want to put the registry file?

[Alle Meije Wink]

> hidden .wine dir, you can't miss it.

Yes, it's there. It was already there before I ran regedit, I think,
because tools/wineinstall does all these things automatically. 

But what is the matter then? I appear to have a registry in ~/.wine, yet
when I run winecheck, it says that there are two errors related to the
registry:

##
029. Checking availability of winedefault.reg entries...    CRITICAL
(entry "SHAREDMEMLOCATION" not found in system.reg registry file).
- ADVICE: file winedefault.reg doesn't seem to have been applied using
regapi.

030. Checking availability of windows registry entries...   CRITICAL
(entry "Default Taskbar" not found).
- ADVICE: Windows registry does not seem to be added to Wine, as this
typical Windows registry entry does not exist in Wine's registry. This
can affect many newer programs. A complete original Windows registry
entry set will *not* be available with a no-windows install, of course,
so you'll have to live with that..
##

This seems to indicate that there is a registry, but wine can't find it.
I installed wine mainly for using matlab (and, required for matlab, the
sun java sdk). Both installations fail because of errors processing the
registry. So it seems that just running programs/regedit
.winedefault.reg is not enough? Has anybody else had this problem, and
is there a sensible solution?

Alle Meije Wink