Drag and Drop files onto scripts

So i've come across an interesting "issue" recently. Here at work we are beta testing our Windows 7 Enterprise 64bit. There's something that is very quirky about the way items are dragged onto a script files.

Some background into the issue. We use a custom script to submit data in the form of an excel sheet into a database. The script is a .hta file. Under Windows XP and Windows 7 32bit, we were able to just drag and drop the excel file onto the .hta, and it would run the .hta script and format/submit the excel file to our database. Under Windows 7 64bit, when you drag it over the .hta file, it just gives you a red x, and won't allow you to drop it.

Anybody knows if there's a security setting, or an option/registry setting to regain this functionality?

Thanks in advance.

Here's a picture depicting my issue