i need help in installing BirdieSync 1.6.10.1 with Thunderbird2.0 on Vista Ultimate x64. Thunderbird works fine

but BirdieSync stops the Installprocedure with the following Error - Message:
"Microsoft Active Sync is not installed. You must download it and install it before BirdieSync installation."
I browsed around the Forums and noticed there are some people out there which using BirdieSync on Vista x64
and it works kinda fine, so it is not impossible i think. I need some advice here

Best regards,
Stephan