my forum is infected with trojan help me

my forums are infected with some trojan , i dont know php but my friends said , so what is the way to solve this problem , i dont want to loose my users and data ... please help me the link is what in my signature...

 

look for some iframe code may be its infected by that way

 

i dont understand what u asking me to do as i dont know php , i am new... by the way what is iframe

 

fetching html file from another (or same ) site and displaying in your sites files

 

can u or anyone help me with this trojan stuff , how to disinfect my forum ..

 

Make sure your running the latest mybb forum software. And check the myb support forums for any news on unpatched exploits.

Remove any modifications you installed on the forum.

Besides the mybb software, make sure all of the software on the server is up to date and your running a current version. Contact the hosting provider and ask them to do a security audit of the server.