Let us assume that your Windows directory is in e:\windows
1. Right Click the OpenVPN tray icon
2. Select the Config you wish to connect to
3. Click on Edit Config
In the notepad that pops up, add the following to the line after the line that says "cipher none"
win-sys e:\\windows
Yes with the double \\
4. Close and Save it the notepad file.
5. Reconnect.