I need help wont let me log in with username root

Ive been trin to get this program to work but everytime i try to log in with the username root it wont let any suggestions on how to fix that? :?:

the solution is to provide the right credentials, but this is not something we can help you with. you have to either set them yourself or ask the one in charge of maintaining the database.

also, read the stickies in this forum:
http://www.heidisql.com/forum/viewforum.php?f=11
and especially this thread:
http://www.heidisql.com/forum/viewtopic.php?t=516