Help. I have some warnings...

Hello.
I have these warnings and i dont know what they mean.

Warning: Cannot modify header information - headers already sent by (output started at /home/mydadsbi/public_html/msgboard3/lang/english.php:103) in /home/mydadsbi/public_html/msgboard3/lib/admin.class.php on line 33

Warning: Cannot modify header information - headers already sent by (output started at /home/mydadsbi/public_html/msgboard3/lang/english.php:103) in /home/mydadsbi/public_html/msgboard3/lib/admin.class.php on line 34

Warning: Cannot modify header information - headers already sent by (output started at /home/mydadsbi/public_html/msgboard3/lang/english.php:103) in /home/mydadsbi/public_html/msgboard3/lib/admin.class.php on line 35

Warning: Cannot modify header information - headers already sent by (output started at /home/mydadsbi/public_html/msgboard3/lang/english.php:103) in /home/mydadsbi/public_html/msgboard3/lib/admin.class.php on line 36

(btw. if ur wondering what the 'mydadsbi' is all about. My band is called My Dads Bigger Than Your Dad, so I use mydadsbi for short)
I got them after changing

<td width="56%"><img src="$GB_PG[base_url]/img/gbook.gif" width="140" height="15"></td>

to

<td width="56%"><img src="$GB_PG[base_url]/img/gbook.gif" width="260" height="50"></td>

I uploaded my picture but it didnt work. so i changed it back to

<td width="56%"><img src="$GB_PG[base_url]/img/gbook.gif" width="140" height="15"></td>

Arghhhhhhhhh i'm stuck!!!!!!!!!!
Cheers

The error message is saying that the problem lies at line 103 of lang/english.php and as the default version of that file only goes upto line 101 I'd guess that you have some space after the closing ?>

Cheers mate.
No more warnings

Oly