When I became interested in ham radio I didn't think getting an antenna feedline into the house would be the hardest part. My problem is a second-story horizontal sliding steel window that I am reluctant to drill through.
I ran across a coax window jumper that looks like it would work well, but I'd like to hear what others think before shelling out a lot of money. The one listed at cheapham.com is the cheapest one I can find:
Comet CTC-50M $46.95 http://www.cheapham.com/coax-wire.html
There are others I have found for about $1.00 but I assume they're not worth considering.