IIS 7 does not execute a cmd file from a asp page

[mercy]

I have a asp page which should call a batch file (someBatch.cmd). The batchfile is working and can be executed via command line but it won't be started if I am using the web page. There is a IIS 7 in front, I checked all the settings but I do not find the corresponding setting to allow these kind of stuff. I know that it is not secure but for now i want to get it working.Does someone know how I can enable this?Thanks