No, TRIM is supportted only in ACHI mode.
And TRIM is supported only with Win7, on a Intel based motherboard (X58 or P55). It's is part of the OS "drivers." No intervention required.
If you don't have the required mobo, you can use the "Toolkit" for a Intel SSD. I think.
Now, and I'm not going to go there, if you RAID your drives, a whole differnet story!
Any more questions?