Hi There DaveC118,
I have done this on my PC having 2 x 60GB (raid 0) as my c drive with 4x 2TB in raid 10 mode for all programs and games, pics , music etc
I set this all up after a clean install of win 7 home and my preferred programs installed to my SSD's on the C drive.
here is the solution to your query. there are a couple of things you need to do using the regedit.exe shell
if your not happy in making changes to the registry then you can make a back up of it first before hand.
WARNING: making changes to the registry can prevent other programs from functioning that have already been installed.
ok so the first step is to change the default path for both the 32 bit and 64 bit registry's
copy the command functions below and paste them into the run command line. only one registry can be opened at a time.
1. 64 bit registry
2. 32 bit registry
follow the path to the following folder in both registry's
click onto the currentversion folder
look for the entry "ProgramFilesDir", double click and change the drive from C to D, where D is the drive you intend to install to, (to distinguish between the two registry's quickly for future ref use lower case "d" for 32 bit and upper case "D" for 64 bit).
and do the same for the entry "ProgramFilesDir (x86)"
exit the directory (exit autosaves) and repeat the process on the other registry
should you need to reverse the process just reopen and it should goto your last exit point on each directory.