During installation, you can move the entire Users folder. Useful if you have a small SSD being used as the OS drive, or if you intend to install a lot of large programs. Google for this, there's various posts on the sevenforums about it. Moving the Users folder to the HDD in turn moves AppData, Desktop, Documents, etc. I'd also recommend moving ProgramData to the HDD as well. Apparently, you can also move Program Files / Program Files (x86) but apparently, doing so can get buggy results, so I'd install programs manually to the HDD. (And deal with what's left that stays on the SSD? I guess.)
Small OS drives (i.e. SSD's) + HDD's + Windows 7 = One giant mess. Good luck.
I'd skip the clutter crap on the web like disabling pagefile and hibernation. Half the point of getting an SSD is to speed up paging and hibernation processes. Obviously though, you want TRIM set appropriately, defragmentation and indexing disabled, etc.