IT Support Log

I am the only IT guy in the company I work for and need to either find or create an IT Support Log.

As it?s a small company (40 Users) I kind of don?t want to spend a load of money on buying some software to do this.

Do any of you guys out there know of any free software to do this or have any suggestions on what to include in a database.

I have created something but it just contains basic information.

Thanks in advance

Jason