You need Adobe Acrobat to create the form fields.
Keep in mind that will help YOU fill out the forms. If you are trying to build a form for others to fill, you'll still need Acrobat (or I suppose you could try and convince everyone else to download and install PDF Form Filler but good luck with that).
Try to use this PDF Form Filler, which can directly help you type on PDF forms.
Thanks for the replies. I had saved a form from someone else that wasn't
fillable and I thought that I could use Adobe 9 to turn it into a fillable
form. So I haven't been able to discover how to do that or if I even can
with that specific form. . I don't know a lot about what can or can't be
converted or if it can only be done by the person supplying the form. Any
further feedback you can offer is appreciated Thanks
If you have Acrobat 9 (not Reader 9), you can simply use the various form field tools that are available.
Also, take a look over the options under the "forms" menu.