Allowing people to post comments with an avatar

Hey there all,

I wanted to make this page, where people could post a comment to discuss their personal experiences during their travels.

But I wanted to know if I could set it up so that someone could select their country.

So for example in the comments someone would type.

Name:
Date traveled:
(Drop down menu of country)
email:
website:

So when someone selects their country it would have an avatar or icon of their flag next to the comment.

is it easy to understand what I mean?

Many many thanks.