you can download activesync as an executable and install it. i have windows xp sp3 and i have activesync on it. im not sure what programs you are using, but i just bought a windows ce.net tablet, and i will be installing this software for APRS myself when i get home saturdaY. i would be glad to help you, if you want to call me sometime i can try to walk you through it. 7726465967 and leave a message ill get back to you. i have loaded aprsisce on my windows mobile 6.5 smartphone through activesync on windows xp sp3 so i know it can be done.73
Did you actually use ActiveSync to link to your Win Mobile 6.5 phone or was it Mobile Device Center s/w? According to the MS ActiveSync 4.5 download page, it
specifically states that it
WILL NOT work with XP SP3

It says to use Mobile Device Center s/w for Vista and Win 7 but I even tried MDC s/w on XP SP3 and neither it nor AS4.x will work with any of the three PDA's I tried. I already downloaded AS4.5 and AS4.2 and could not get either to work. I also confirmed the USB port is functioning correctly. After I gave up on Sunday, I remembered that I have an old IBM Thinkpad 600 that was taken out of service that I can boot up and if I think it has AS4.x on it. I'm going to try that this week when I get a chance. If that doesn't work, I give up as this is taking way too much effort to do just for a one off demo. I don't use APRS anymore as I don't need it. I simply volunteered to do the demo as I thought I had everything still working that would support it but now it appears not

Gene W5DQ