Ok guys I got in!!! Followed Tha_Rooster's instructions and drilled a very tiny hole through the window frame that allowed me to run a large paperclip through and push open the latch lever and open the window. I used black silicon to patch the hole and it's barely noticeable.
Once I had the door open I took the lock mechanism apart and found that the power motor/solenoid had seized in the lock position preventing the key from even turning the lock to the unlock position. I removed the rod connecting the motor/solenoid to the lock mechanism and I can operate the key as normal.
I can now go on my planned trip in the morning and when I get back I'll schedule the coach to have the motor/solenoid replaced.
Interestingly I spoke with several locksmiths and a couple of RV shops and they were all very hesitant to help me. The RV shops said I should get a locksmith to open the coach before they could look at it and the locksmiths were hesitant about getting in through the window and said I needed an RV shop. Go figure!
Thank you everyone and special thanks to Tha_Rooster for taking the time to call me and help me with the problem. It's great to know that kind and knowledgeable people are here to help when the professionals don't seem to want to be bothered.
Happy Travels! Paul
2006 National Tradewinds 40D
Colorado Springs, CO.