Squeak,
Here is a link to the MMCd page. there is a lot of good info on the page. Including instructions on making a datalogging cable.
http://mmcdlogger.sourceforge.net/
This link is to
WWW.3si.org, there is a huge amount of info on MMCd pocket logger there and also the latest updated software version 1.6n i think. The only thing you'll have to do is register (its free) to goto the download page.
http://www.3si.org/forum/showthread....highlight=mmcd
This is a link to Pocketlogger they sell a program and a cable that only works for you and your reg number that they give you. there is lots of great info there and it also tells you what PDA's will work with the software. basically you will need a PDA with OS 3.5 or higher.
http://www.pocketlogger.com/index.php?pid=dsm
Here is a link to "Palm-N-Stein" it's free logging software but IMHO MMCd is better for free.
http://students.db.erau.edu/~szabafab/stein/
Lastly, this is the link to DSMparts.com. They have an already made cable for around $70 and it's worth it. This is where I got my cable.
http://www.dsmparts.com/customer/pro...cat=162&page=1
Hope all this helps.