Some questions on Multilingual sites with domain strategy

[guidoboem]

hi seomoz addicted, i need your help....

did you see the webinar last friday?

i totally agree with randfish,
especially when he talks about redirection;

To create my multilanguage site i inserted a php redirection on my site homepage that redirects visitors to the right domains. everything it was working fine when i realized that googlebot was no more able to index both sites becouse  it was redirected only to one.... i think that i'll create an home page where visitor could select their language and then by setting a cookie that redirects only the returning visitors ... what do you think?

I've just one doubt, shall i put this home page on both domain, and what will be the new url adress of my current home page?

How the new home page have to look like ( in terms of seo )? i mean there will be only an image and two links for the .com and .it domain, isnn't it? and how to put the cookie for returning visitors?

hope to have been clear

thanks,
Guido