Windows script host error, can someone please help?

Your Registry got mangled somehow and messed up your file associations. Given that one of them was .EXE that makes things a little more difficult, though not insurmountable.

The simplest fix I could find was here but the fact that you cannot handle .EXE files may complicate things since you likely don’t have a desktop. However, using that fix with the method described elsewhere for WinXP should do the trick. I’ll copy/pate the relevant portion of the second link below, but use the file for the EXE fix from the first link since Win7 is not WinXP.

“NOTE: If your EXE file associations are corrupted, it can be difficult to open REGEDIT, or to even import REG files. To work around this, press CTRL-ALT-DEL and open Task Manager. Once there, click File, then hold down the CTRL key and click New Task (Run). This will open a Command Prompt window. Enter REGEDIT.EXE and press Enter.”

Merging the .REG file into the Registry will be a little easier if you unzip it first since Regedit cannot handle .ZIP files, but unless your Registry is totally broken, you should be able to unzip the file. Once you unzip it and get Regedit open, you can go to File —> Import… to merge it with the Registry, which will make the necessary changes to get your system back up and running.