W700 - how to add a 2nd 34mm ExpressCard?

[AMATX]

Hi all - I recently bought a W700 that I configured with a 34mm ExpressCard slot and a card reader. Well, shoulda gone for the 54mm ExpressCard option in the second slot, but didn't know this at the time.

So, I'm wondering how difficult/practical it would be to replace the card reader with either a second 34mm ExpressCard(preferred) or a 54mm ExpressCard(not as good, but better than a card reader). There was not an option to configure the W700 with two 34 slots, but Lenovo did have an option for a 34+54 config.

Ideas? Just a matter of picking up the parts and cracking the case, or is this something I wanna shy away from?

I have enough experience w/pc to pull this off, if easy; if way difficult, I'll let it go for now...

P.S. Poked around on ebay a bit, found Thinkpadonline.com which has lots of parts. Appears(maybe) that this is a two piece unit, incorporating the various Lenovo choices; that is, a part with both the 34mm ExpressCard/card reader, or another part that includes both the 55mm+34mm ExpressCards, etc. If so, I guess I'd be looking at replacing both slots(one piece/part) with another part that has 34mm+54mm in it.

Don't know much about ExpressCard stuff, so am fumbling around at this point.