Explorer. I'm sure a Mac can do something similar. That is assuming that you are using a version of Windows which will burn CDs. I know XP Pro does this. I'm not sure about XP Home.
Assuming you want the contents of all twenty cards on each CD, you will need to insert and remove each memory card 10 times. Once for each CD to allow the contents of each one to be copied to each CD. It would be a lot simpler to copy the contents to the hard drive once, and then copy the whole group to each CD from the hard drive. You can then delete them from the hard drive when the copies are finished.
I have the need to copy a lot of photographer's work several times over for a lot of clients.
I don't want to store this in the memory of my computer. I have to do this at locations so I'm thinking I need a lap top. I question how slow that will be with a lap top.
I'm looking to take the work of 20 memory cards & duplicate it onto 10 cd's. I don't need this memory stored on my computer just transferred to the cd's so the work can be disbursed quickly at the location.