y si cambio a $_GET el formulario me sale este error
string(56) "C:\\Documents and Settings\\Win\\Escritorio\\25amcsj.jpg"
Warning: fopen(C:\\Documents and Settings\\Win\\Escritorio\\25amcsj.jpg) [function.fopen]: failed to open stream: No such file or directory in /home/chicharrin/domains/pinkynet.com.mx/public_html/imagenes_bd/guardar.php on line 7
Warning: filesize() [function.filesize]: stat failed for C:\\Documents and Settings\\Win\\Escritorio\\25amcsj.jpg in /home/chicharrin/domains/pinkynet.com.mx/public_html/imagenes_bd/guardar.php on line 7
Warning: fread(): supplied argument is not a valid stream resource in /home/chicharrin/domains/pinkynet.com.mx/public_html/imagenes_bd/guardar.php on line 7
Cita:
Iniciado por abimaelrc 
Con razon, el metodo que estas usando no es $_GET si no $_POST.