internet explorer 7 ie7 in crossover office shows runonce.msn.com/runonce3.aspx every time

After upgrading from ie6 to ie7 for our crossover pro users, we found that they were all getting the runonce page (http://runonce.msn.com/runonce3.aspx) and couldn't get rid of it. Searching the codeweaver support site didn't help, the only advice given there was to ignore the issue. After looking around a bit I found that the way to remove it is to fool ie into thinking it's already displayed it, using regedit as listed in the comments in this page
I ran regedit using cxrun and added these values to the registry.

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main] "RunOnceHasShown"=dword:00000001 "RunOnceComplete"=dword:00000001

After that I decided to change the default search to google using regedit as well (since changing it doesn't work from crossover)

[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\SearchScopes\{2FEDD0BC-4D55-413C-8B59-BFE70133A2CB}] "DisplayName"="Google" "URL"="http://www.google.com/search?q={searchTerms}&rls=com.microsoft:{language}&ie={inputEncoding}&oe={outputEncoding}&startIndex={startIndex?}&num=20&startPage={startPage}"

After that, ie7 opens to our specified homepage and the search bar goes to google as it should.