A little heads-up which might save you some disappointments (which I personally went through):
I recentrly built a PC with 1 SSD (C:\) and 1 HDD (D:\).
I installed Win7 Home Prem x64 on the SSD and only formatted the HDD.
Knowing about the SSDs limited life due to writing/deleting I thought it would be smart to move "C:\Program Files" to "D:\Program Files" so all programs that do not ask for installation directory will be by default installed onto the HDD thus sparing the SSD from unimportant programs.
However it is officially not supported by Windows 7 to move the "Program Files" folder. A possible work-around and a common one too suggests to creating a "Junction" and move "Program Files" using "robocopy /XJ". This will only copy regular files but not "Resource Points" like junctions effectively crippeling the this folder (virtually losing hundreds of files/hardlinks) and eventually disabling windows updates (at least partially).
So do not even try to move "Program Files" unless you can live without updates.
If you want to know more consult this article with paying special attention to "TheMan"'s comments which explain why the suggested "solution" does/will not work.
http://tuts4tech.net/2009/08/05/windows ... partition/
Anyhow, I suggest puting all startup programs onto the SSD as well. (Win7 boots in under 2 min and is fully operational for me).