Welcome to the site!
If you are running XP or lower, ActiveSync should be just fine. If you are running Vista, you will need the Windows Mobile Device Center instead:
Windows Mobile Device Center 6.1 (WMDC) | Download | Windows Vista
And BTW, if you are going to install
Adobe - Reader: Adobe Reader for Pocket PC, there is a hack to display VGA:
how to force HI_RES_AWARE (true vga) in Windows Mobile 5.0 ^^