Well, it may be that the files are corrupted - where did you get them from? You don't see a lot of Type 1 fonts these days.
In your original post, you said "these following... look like symbols rather than type: AGaramondAlt," etc.
Take a look at
Download Adobe Garamond Regular Alternate - Linotype.com - this is what Garamond Alt should look like.
How many fonts do you have installed on your machine at the present?