Idrisi Information
Idrisi is an affordable GIS package that runs on the windows platform. In order to georeference an image in Idrisi you have to know how to:
There are several resources on the internet which should assist you in learning these skills.
There is an online Idrisi tutorial built by Eric Lorup.
Eric has also compiled the Idrisi FAQ vers. 2
The online help for Idrisi is also very helpful

