How do i create my signature??

hey guys... can sum1 please tell me how do i put the pictures as my singature... i treid doin it but i couldn't do it so i wondering sum1 might no here coz every1 has pictures everytime they post a message... thanks for helpin... i thought i say in advance...

Reena

Some1 plz reply to this... so far 21 ppl seen this message but no1 has reply...Y? doesn't any1 no how to put the picture as a signature...?