I built this for myself after having trouble getting trades in when mtgox is very slow and difficulty getting the other cli client running. About half way though writing it, I thought it would be better to implement the entire API split off the code into a reusable library.
Edit the .exe.config files to set your apikey. Source code is included if you feel better compiling it yourself.
Suggestions and donations welcome.
1ADKdrLz6ZPhamYQvR9rB74qjbJFZmiY2B
http://www.mediafire.com/?a5hq2155g212gkf