change header in gridmarket problem

Hi there,

I can´t change the header in the gridmarket.

I can´t change the text in the header or put a custom image header.

I upload the header but it don´t appear on website...

In the theme options, in "type of header" i tried to select the option "Custom header or logo..." but when i click on save options buton the option that i selected dont appear selected...

Please help me with this...

I am sorry for my bad english.

Best regards,