So, you want to use LEEDonline?
First thing, you must have Internet Explorer or Safari. It won't work in any other browser.
There's a list of other things but if you have used LEEDonline in the past, you will need to make some changes.
If you have 64 bit Internet Explorer, you will need to setup a 32 bit option. This is easy enough:
Now, to make sure that this 32-bit version of Internet explorer operates in "compatibility mode":
And, assuming you have the correct version of Adobe and the correct plugin, you should at least be able to log in.
Good luck and please post any questions in the comments!