Currently Being ModeratedOct 22, 2011 12:11 PM (in response to sammarriott)
Lion only supports TRIM for devices with certain names that match Apple's approved devices. Unless it's an Apple Device ID it won't turn TRIM on for you.
You can turn it on however using the hacks - I think you've found those though? I use the hack on my 2010 11" Air, 2011 MBP, 2011 iMac, and 2009 Mac Mini...and it works absolutely fine on all of them.
This is the method I used to turn TRIM on.