Does anyone know where I can get a registration key for eOffice professional?

Well if you bought it or are going to buy it this would be the place: http://www.eoffice.net/

Buying one would be an excellent idea, especially since Sergey, the author, posts here.

Wow that's bold asking for a license registration on a public forum... Try: http://www.caast.org/Default.asp?language=English and be certain to tell them what your looking to accomplish. Buy it like everyone else...