The HCFA 1500 text form should be used if you have the pre-formatted red HCFA paper loaded into your printer. If you are printing on plain, white, 8.5" x 11" paper, you want to use the HCFA 1500 non-text option. It will be listed as HCFA 1500 (without the word text).
Here is a link to an article that will walk you through aligning the text on your HCFA 1500 form.