There was no need to purchase another program really. (I assume you're using the CD version you installed on your computer). You can only e-file 5 tax returns per e-mail address. Doesn't matter how many installs your purchase either. After the 5th e-file, you have to print, sign and mail additional returns.
With the CD version you can do a maximum of 5 installations. So if you install it on a 2nd computer and use a different e-mail address when registering it, you can e-file 5 more returns from that 2nd computer.
