Urgent help required ..plz !!!

i just installed the contributor hack and started getting these errors ....

g
Warning: Cannot add header information - headers already sent by (output started at /home/123.com/httpdocs/forums/admin/functions.php:1) in /home/123.com/httpdocs/forums/admin/functions.php on line 1686

i have uninstalled the hack but still getting the same message

someone pls help ..
thanks

[Xenon]

be sure you don't hava a blank line before the <?php tags in your files

[desi]

thanks Xenon had a alphabet "g" before <?php

fixed now ... thank you

[Xenon]

you're welcome