Virtual Cockpits

I've been flying the 738 with VC since I bought FSX 3 months ago. I joined a Virtual Airline and downloaded their 738's with their paint. The problem is they are updated Opensky 2004 types. They load and fly great, but no VC and I am very accustomed to flying in VC (Better visibility when landing). How can I get a VC into the OPensky files? What do I need to copy from the Standard FSX 738 folders, and where do I place it?

Also, where can I find a 757-200 VC? I have looked all over avsim.com but couldn't find any. Maybe I am looking for the wrong thing.

Thanks in advance for any and all help on this!~