mobile phones attached via USB odr WLAN or BT do no support TAPI

I have 2 questions:

1. is there an possibility, to send a call-Command to my mobile phone (Windos Mobile 6) ?

2. when i click to a "callto:"-link in my sugar-crm - skype opens -
is there a way to tell windows to open a different application ?

THX !!

sigi