Are these still on the same computer?
I'm going to try and break it down so I understand your question...
1) You have Win7 installed on a partition on one hard drive and want to save data to another separate hard drive? ... Yes, they will all be available/together on your desk top.
2) You have Win7 installed on a partition of a single drive, where you are saving data on the other partition of that single drive? ... Yes, they will all be available/together on your desk top.