drive partitioning with unattended

[maelstrom]

ok heres my delema...

I need to create an unattended distrubution for my network.

I need to make partitions based on drive size with these conditions:

if drive size is < 10gb I need to make a 4 gb NTFS C: and make the rest an NTFS D:

if drive size is > 10gb I need to make a 10 gb NTFS C: and make the rest an NTFS D:

the D: drive will need to hold the Documents and Settings folder and the users personal space.

I need the disk to be dynamic as well

Also I need to install Way more software and patches than I can fit onto one CD, so I need the install to go out onto our domain to install software from a remote share, but I am not willing to put an un encrypted password onto the cd..

as this will be on the endusers system it needs to be completly automated....the only other option I have is to do a RIS install(with which I have no prior experience implementing).

Can anyone help?

(the more practical the solution w/ examples or even code...the better)