what software to us to do a modem myself

[ricky38570]

sorry i am new i have a mod Motorola SB5101 Cable Modem please can someone tell me what i need to set up my mod modem i have a blackcat jtag right now i have dsl i like to set up with comcast would someone tell me what i need a step my step set up files and progment to download or i can give you my email to send me the files i would thanks you if you would help
me out here please i no how to flash dishnetwork rec and jtag but this is all new to me