Don't waste your money. Unless you own an external SCSI Compact Flash drive connected to your MPC, you would have to load all the samples on your computer and make new kits out of them using an MPC software editor or saving to floppies and making the new programs in your MPC. That would be extremely time consuming. Also, most of those cards you see on ebay are garbage. You would need to rename them as well, since the MPC2000 only reads 8 character filenames. The MPC1000 reads up to 16. Thats more time spent on the computer renaming all those samples. It aint worth it.
You're much better off buying samples here, where they're all done professionally, and your purchases are backed up in your account. If you lose any sample packs or tutorials, you can always re-download them again, while the crooks on e-bay with stolen samples wouldn't care if you lost the samples on your CF card.
Check this out...
http://www.mpc-samples.com/section.php/31/0/hip-hop-drum-libraries/Re-Download' Guarantee
After purchase, if you ever need to download again (e.g. you lose your files in a hard drive crash etc), it's no big deal - as long as we still sell the item, just log into your 'file bank' and click on 're-download'. No hassle, no problem and completely free!
In addition, you can now easily change the download format for most drum sample and video tutorials from within your file bank - this is perfect if you accidentally purchased the wrong format for your MPC, or perhaps have recently changed MPC model. If there is a drop down box next to your file link, just select the new format and then re-download.
All of the sample packs for sale on this site have a few free downloads to give you an idea whats in the pack...
http://www.mpc-samples.com/product.php/68/the-phat-pack/ 
