working with cookies in 2 domain names

[yousha]

I want to create a cookie in a domain name and read it with an other domain name
can I do this? HOW?

for example i want to create a cookie in www.a.com/b/c.htm
and read it in www.d.com/e/f.htm

how i must set the cookies ?

[mcjwb]

Not possible.
It would be a major breach of security if you could.