I've been downloading the Adobe Premier Elements 3.0 30 day trial to finish a project from home.
I'm running Windows 7 and it doesn't seem to install.
Once the download is complete it states so and asks to install now.
Clicking install now does nothing.
There is not version 3 trial available that I'm aware of, Grace. That version of the program is at least 5 years old -- and wasn't designed to work on Windows 7.
I recommend you download version 9 instead, which is Windows 7 compatible.
Welcome to the forum.
In addition to Steve's comments, be aware that the trial of PrE will place a watermark on your Exported AV file, so you might not be pleased with using any trial to do work, other than to test the program.