XBOX read problem..

Hello,

Got an XBox Green Edition, with Aladdin modchip, i just played with an Software DVD , which has many softwares to install in xbox, i just earsed unknowingly the bios and formatted C: , now no dvd games or MP3 Cd's and even the Xbox software DVD is not recognized or cant be read...

Please help me howto flash the bios or re-install it.. to work all DVD's and CD's

GANESH