Hi Tim,

Check out this link
http://www.compsys1.com/workbench/On...c_project.html

You can interface to very large multi-megabyte mmc cards with their project. You have to buy the software, but I think it's only 21 bucks. If you don't need to read the card with Windows, they have a free version that just uses the SPI mode of the MMC cards.

As for the Time Clock, I use the DS1302, mainly for it's built in back-up battery charger and ease of use. Dallas Semi has several other versions as well depending on the specific needs of your project.

HTH,
Darrel Taylor