使用密码保护的代码签名的Team Foundation Server Build失败

I'm trying to setup a continuous integration build on TFS 2008. In the project I want to build I use a key for signing. This key uses a password. I can't get it to build, because during the build TFS wants to show a dialog which can't be shown. I think I need to build the project by hand on the server, but only the TFS explorer and build parts are installed on the server. Any suggestions on how to get my project to build properly?I'm trying to setup a continuous integration bu