Charles, please look before you leap. At least try it out on something other than your main machine. Things have sort of settled down for me with a lot of work but I had more misadventures with Win7 64 bit than I expected. For one thing StrataFrame didn't like it at all, with no promised date of compliance. That might be a deal killer right there for you. Several other of my everyday apps also bit the dust.

The irony is it doesn't even feel faster.

>I'm really in over my head on memory/OS stuff but definitely want to learn. If I have a single quad core processor, should I be using a 64bit OS ? Right now I'm running Win 7 Ultimate 32 bit with 4 gb. I am not sure if I need to be looking at a new box with 64 bit and multiple processors and 8gb + or just need to think about going to 64bit on this box and bump the memory.
>
>>>>>Uninstalling and then installing a new version of DxExperience and getting errors that the assemblies in the GAC cannot be deleted/updated etc. Look in c:\windows\assembly with explorer - no files. gacutil.exe /l = 0 files. AAARGH!.
>>>>>
>>>>>Turns out that in low memory conditions Windows 7 will shut off the Indexing Service which effectively shuts down the GAC - no read, no write, no see, no warning. Rebooting doesn't fix it, because it doesn't just stop the service - it turns it off as a Windows feature - just as if it were never installed.
>>>>>
>>>>>Turning it back on in control panel / windows features and then rebooting and the GAC is back - installing and uninstalling works again etc.
>>>>>
>>>>>Took a *lot* of googling and fiddling to figure this out, so I decided to post here hoping it may save somebody else the agony.
>>>>
>>>>Wow - guess you are wishing for some MS devs to line up and slap them with the keyboard in Monty "Fishslap" style...
>>>
>>>that would be fun - would also be fun to have Win7 32 actually be able to see more than 3gb (though I suspect the actual problem is more akin to the old system resources issue)
>>
>>You can use more memory, but only as a faster replacement for the swap file - you swap similar to the extended memory very late in DOS, but needed for the large version of Foxpro/Dos. Mostly depending on your video card you can expect up to 3.5 GB of main memory, but each process still has its 2GB (3GB with the large switch) limitation - but if you have such a beefy HW-system needing to work in 32Bit, perhaps running 3 32Bit-VM's in parallell on 64Bit base is a better solution ?
>>
>>regards
>>
>>thomas