Create a clickable email hyperlink within an email

In windoze I can type, for example

person@server.com?subject=Fish&body=Cod

and when I send the email with that in, the person I send it to can just click the link and it will:

create a new email
put the person it goes to in the 'to' field
put the subject in the subject field
put the word 'cod' into the body

However, when I do this in snow leopard, I just get an unclickable line of stuff, much as you have probably viewed above.

Also, when someone sends me an email with a similar link, it's also not clickable and I have to laboriously create a new email with all the fields remembered and filled and gone back to and... well you get the picture.

HELP! How do I make it clickable? It's not the same as a clickable URL, I've discovered, so that didn't work.

Thanks.

 

thanks, but bunging in the 'mailto' bit didn't work for me, it just added an extra unclickable word.