Barb, if you go to
http://www.dwlz.com/links.html and scroll down, on the left there is an entire section of ww Palm links. WWCalc is what I use now; it lets you input points, look up restaurant points (if you d'load the restaurant databases from Dottie's site), calculate points, calculate BMI, calculate exercise bonus pts, etc. Also keeps track of your banked pts and pts left for the day. Really great tool!
It does allow printing: "The Export feature allows data that you have entered into WWCalc to be formatted and written to the built-in Memo Pad data base. After hotsyncing your device these Memo’s will be available on the Palm Desktop where you can print or archive them. "
Re: your sister's Mac vs. your PC, no problem there. Palm files are .prc files, readable on either platform. Your sister can either email you the .prc as an attachment or put it on a floppy that has been pc formatted. (Macs can read and write to those.)
Hope that helps..
Jan