Just go to circuit city or best buy (they have tons of them on Ebay) and for no more than $20 you can buy a 13 in 1 multi card reader to connect to your computer. By getting this, if you have one camera that uses SD card and another that uses compact flash and another that uses Memory Stick, you can put them all into the same device and read / delete from the computer. Here is a link to ebay:

http://photography.listings.ebay.com/Memory-Card-Adapters-Readers_For-Multiple-Formats_W0QQfromZR4QQsacatZ83864QQsocmdZListingIte mList