Hello Tom,
Are you currently seeing a doctor or urologist? Only your doctor can give you good solid advice as to what the ED is and what is causing it. If he recommends taking medication, then it might not be a bad thing. However, if you are not seeing your doctor, it's difficult to know what might be causing the ED and whether or not the medicines will work. Online resources are great sources for information, but should never be taken instead of your doctor's advice.
Dr Jay Motola wrote an article outlining and comapring all three of the ED drugs, Viagra Levitra and Cialis. You can read that article here.
Hope this helps. Stay in touch and let us know how you are doing!Vicki M