KPARVEZ I love this program. I had bought a HP iPaq 210 in September and I couldn't install programs since I use a macbook. I had to borrow a friend's PC to install software. I wanted to download and install software via my macbook. At the time, I had downloaded Missing Sync v4.0.2 and it didn't work for me. I couldn't manage to get my iPaq to sync to my macbook.
Recently, I read somewhere if you turn off 'advanced network functionality' on your iPaq 210 device (via "Settings" and under "Connections" and under "USB to PC") it might help. So I clicked off that function. Then I downloaded Missing Sync v4.0.4 and lo and behold, I have Missing Sync working and connecting to my macbook. I also managed to install programs and update my itunes onto my windows mobile device. YAY!
I thought I'd pass on this good news to everyone who may have had issues in the past.
(Version 4.0.4)