I have used windex with some success, but I am now using a mixture of 70% 409 and 30% alcohol that seems to work better. I have some "orange" wipes that were suggested by someone else here at RCU but haven't tried them yet. There is another thread here that will probably give you more ideas - try doing a search.
As for the antenna, I really like the Dubro hook and keeper, P/N 349 (
http://www2.towerhobbies.com/cgi-bin...?&I=LXD666&P=0). It is a very clean and nice looking installation.
Steve