buddies i need your help cracking a password

this is the URL

siceuc.ucol.mx/sorteo/login.asp

It just has the password field.

Im shure its only numbers like 8 or 9 digits.

I tried using BRUTUS but it gives me just wrong passwords.
CAN I Get some of ur help? im shure it just will take you like 2 o 3 three minutes.