Hey guys, I also agree whole-heartedly with SSD's being THE thing to upgrade besides RAM to make everything go fast as @#$%!
I opened up my first ever MBP (17" 2011) yesterday and wow, every square millimeter ised used by Apple. I've never seen anything like it.

Anyway, I have an Intel Gen. 2 160GB w/ TRIM support, but it's the 1.8" version, not the 2.5".

((( I do have a 1.8-2.5" transposer "contraption" that makes it fit into most 2.5" bays, but not the MBP. When I finished the other thing I needed to do, which was adding the 8GB of RAM, that went super smoothly and was immediately recognized by Snow Lep and Lion.
However, that was not the case for the SSD. I left it in there just to see if it would get recognized at all and it didn't.

Do I have to format it in HFS+ first? I have an external 2.5" drive enclosure and I suppose I could fit it in there for the purpose of doing whatever to do it that's necessary for the system to at least recognize it at all...?
It's a SATA II drive (3Gbps), but that should be fine in the SATA III (6Gbps) bay, no? Also, I noticed there is only the connector, not the 4-pin SATA power cable to be found, but I suppose that's fine since the hard drive that's in there now works fine with bus power?
It also didn't show in Disk Utility at all when I got the MBP to start with the main installation DVD. It "saw" the external FireWire 800 RAID array just fine, but not the internal empty SSD.
Can someone please help me out? Thanks!!!