Improved registry isolation possibilities.

wine.ini

@@ -125,13 +125,25 @@ LPT3:=/dev/lp3
 [spy]
 Exclude=WM_SIZE;WM_TIMER;
 
-[Registry]
+[registry]
 ; Paths must be given in /dir/dir/file.reg format.
 ; Wine will not understand dos file names here...
 
-;UserFileName=xxx		; alternate registry file name (user.reg)
-;LocalMachineFileName=xxx	; (system.reg)
-			
+AltCurrentUserFile=            ; alternate registry file name: HKCU
+AltUserFile=                   ; alternate registry file name: HKU
+AltLocalMachineFile=           ; alternate registry file name: HKLM
+
+;These are all booleans.  Y/y/T/t/1 are true, N/n/F/f/0 are false.
+;Defaults are read all, write to Home and Alt
+;Note: it is pointless to specify alt files and neither load nor write to them.
+
+LoadGlobalRegistryFiles=Y      ; Global registries (stored in /etc)
+LoadHomeRegistryFiles=Y        ; Home registries (stored in ~user/.wine/)
+LoadWindowsRegistryFiles=Y     ; Windows registries in windows path, above
+LoadAltRegistryFiles=Y         ; Load above registries.
+WritetoHomeRegitsryFiles=Y     ; TRY to write all changes to home registries
+WritetoAltRegistryFiles=Y      ; TRY to write all changes to alt registries
+
 [Tweak.Layout]
 ;; WineLook=xxx  (supported styles are 'Win31'(default), 'Win95', 'Win98')
 ;WineLook=Win95