SKYPE is only available on Verizon as far as I know. Don't think it has been released to the "wild" yet.
The 9780 is sold with OS 6. Don't think the 9700 is unless certain carriers have released it.
Here is a link from the OS 6 section about it on the 9700:
http://www.blackberryforums.com/os-6...ontribute.html