If you want to save yourself some headaches, I would invest in an SD/CF Reader/Writer for your PC. This way, you remove the SD or CF card from your Axim, put the card in the reader (which attaches to your PC), transfer the files, then put the CD or SD card back into your Axim. Lots of folks have had problems using the ActiveSync method with larger files. I would pick one up, you'll soon see why it is a wise investment
