Forum Pre-populating text in a new thread

[محروم.كوم]

Hi, I would like to create a link that opens up vbulletin as a new thread post in a pre-defined category AND I want to pre-populate the text. Is this possible?

I already can accomplish the first part (ie. creating a new thread post in a pre-defined category) with the following URL:

http://www.mydomain.com/forums?jfile=newthread.php&f=59

but what I want to figure out is if there is a way to also pass some text to pre-fill in the content (eg. '&message=some_text').

Thanks! __DEFINE_LIKE_SHARE__