I just went through the same thing. The only ways to do this is to create a partition 1st or hit CTL-F10 at the first setup screen during install. This opens a command prompt and you can use diskpart to create the partition. I don't know how to align in diskpart so I just let Windows 7 do it's thing. I have the 100MB and the other one it created. The Torqx seems to be running fine although when I get the final Windows 7 I want to do this without the little partition. I think the only versions that will do this are the Ultimate and enterprise because it's for bitlocker.
Partiot Torqx 128GB/2 WD 500GB Black/ i7 860
Patriot Torqx 128GB/2 WD 500GB Black/Core2 Quad 8400