I simply said that, if you want to use a nocd .EXE, it should be a 9.1 nocd .EXE because, it's not safe running the 9.1 .DLL set, with a 9.0 executable.
The FS9.EXE is usually patched using utilities discussed here and on many other places, to allow the use of more than 2GB, and this is best done AFTER a successfull 9.1 update because, if you patch it before updating to 9.1, the update will fail because the FS9.EXE was modified so, even without using a nocd, it will result in a 9.1 .DLL set, with an un-updated 9.0 FS9.EXE
Basically, this is the correct FS9 installation sequence, from scratch.
- Install FS9 from the orignal CD
- Update to FS9.1
- If you want to use a nocd FS9.EXE, install an FS9.1 nocd.
- Patch it for >2GB now, if you want.