Modding A Macbook into a Tablet??

I just got a new Lenovo Thinkpad X60 tablet for work.  It's got Vista on it, which pains me.  But it's a lovely machine, and a tablet too.  The tablet thing is cool, but I am still quite attached to my Powerbook.  Then Heather told me about this "Modbook."  You buy a Macbook or a Macbook Pro, and then ship it to this company to turn it into a tablet. Whoa.  Pricey. But if you can afford the fetish and you are dying for a Mac tablet, then shudder. . . it's awesome.