If you buy Limewire pro from
www.limewire.com at US$18.88 you can use the Email address YOU USED TO BUY THE FIRST COPY to get other copies of pro for six months. To do this you need a browser, but not e-mail.
I think perhaps you are confusing e-mail and web browser. You will need a web browser on your computer to download Limewire.
Hum I'm getting a bit confused. You must reply to Limewire's e-mail before you can actually download Limewire pro.
In short as long as you have replied to the e-mail on the other computer, you can download a copy of Limewire pro onto both computers using the one e-mail address.
I hope this helps