I'm getting ready to do this same mod. I already have the CF-IDE adapter. Just need to buy the 32GB card.
Interestingly, I searched eBay for the ADATA 32GB "Speedy" card and found two listings, both for $141.00 (buy it now). But the same card from NewEgg is selling for $109.99. I'm surprised to find such a disparity on an eBay price.
Here is the eBay card I am looking at:
32GB ADATA CF-32 G GB Go 32G Speedy Compact Flash Card - eBay (item 220250769811 end time Jul-03-08 16:28:00 PDT)
And here is the NewEgg card:
Newegg.com - A-DATA 32GB Compact Flash (CF) Flash Card Model SPEEDY CF 32G - Flash Memory
Are these not the same?