Hello there! I have a question. I have the PMDG 737NG for FS9. I downloaded new liveries on AVSIM and I can run them no problem on the 737-700. However, the 800W, I downloaded a Delta repaint and it does not show up in my selection of aircraft. However, when I run FS9 as Admin, I can fly it. I flew my first full flight with it, and it flies great. But, for some reason the NAV radios will not set and the APPR button will not light up and it says NAV INVALID. I even chose a RWY that used the standard 110.30 as a freq, and the APPR button did not function and I got the NAV INVALID message. I edited the CFG file NAV radio section and got them to change once. I took off, and they did not change again. I have quite a few hours on the 737-700, so I'm pretty confident I got the FMC programmed well. 

I'm not sure if it makes a difference, but I noticed some things on FS9 are different when I run as an admin. (Some scenery and AI I put in do not show up either.) 

Also, I checked my CFG file after I flew and the changes I made to the radio section are still intact.

I am also running Win7 Pro 32bit