Why can't open mod file

Hello, everyone. I am a new chinese user of dynare.I have just installed dynare 4.1.3. But can’t open mod files. And when when I open the folder of mod files in examples, my computer display there is a conflict with my os, the procedure of rundll 32 will be closed in order to protect data. why? I need your help. Thank you!
PS: my os is vista.

Please give a copy of the MATLAB window: which commands you typed, what messages you got in return. Without this information we can’t help.