there is no longer a need to capture the first name. Especially in the IM NICHE!
Just capture the email.
In years past, the name was good because you could do "name personalization" in the email you send out.
Now everyone knows it's a trick (In IM).
It usually decreases response.
Some times people type in FAKE names anyway
Capturing ONLY their email on the other hand almost always increases your conversion rates on your squeeze pages.
So forget the name, capture the email address only.
Right now I am getting up to 69% Conversions with 'email only'