>> btw, I got a crash on trying to load a 10K LEV (output >> from Global Mapper). do you want any more details or >> should we file it under 32 bit, blah blah. There was >> only a Microsoft dialog anyway, that's about it. > If you mean it's 10000 x 10000 pixels, and you have > enough RAM, you may need to enable the 3-gig switch > (/largeaddressaware or something like that) for the > leveller.exe file. The way to do it is to edit the boot.ini file, and add /3gb to the end of the line containing the ARC path which points at your WinXP install. Here's the MS references if you need the specifics: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/win64/win64 /wow64_implementation_details.asp http://support.microsoft.com/kb/833721 Hope this helps Adam