Upgrade Inspiron 1520 Hard Drive, Media Direct, Diagnostics

I have an Inspiron 1520 and I would like to upgrade the hard drive. In the process, I'd like to keep the diagnostic and media direct partitions. I currently have the following partitions:

• FAT - 78M - probably Dell Diagnostic partition
• FAT32 - 3.10G - probably Dell Media Direct
• C: -- NTFS (Win XP OS)
• D: -- NTFS (My Documents)

I noticed that Dell has a 750G HD that should be great for this machine. Before I order a hard drive, I'd like to know the process I need to go through to get all these partitions set up properly. I have three options:

1. Using ShadowProtect Desktop to clone the disk and/or partitions, then restore. This is the most likely option.
2. Doing a clean install of Win XP SP3.
3. Upgrading to WIn7 when I do it. In that case I'd need to know where to find Win7 drivers for this machine.

Is a checklist of steps available to follow to be sure that the right things are done in the right sequence?

Thanks.

Dale