My computer is currently configured as follows:

3 GHz AMD dual core processor
4 GB RAM
256 MB video card
C: = 80 GB IDE
D: = 300 GB SATA
E: = 300 GB SATA
F: = 1000 GB SATA
G: = 1000 GB SATA (external)
H: = 500 GB USB-2 (external)

My C: & D: drives are backed up to my E: drive;
My F: drive is backed up to my G: drive.
My C: & D: drives are redundantly backed up to my H: drive

My F: and G: drives are 91% filled, and will be replaced with 2-TB drives, the 1-TB drives left over will replace the D: and E: drives.

So, now the question(s). Would I see significant performance improvement if I replaced my C: drive with a 128 GB SSD drive? Can I even do that, since my C: drive is an IDE drive? Would it be possible to replace the C: drive without having to re-install Windows and all my software? If I did have to do that, would it be better to replace my 32-bit Vista with 64-bit WIndows 7?

tanstaafl.