How to set speedtouch 511 modem to bridge mode?

[lqq889]

hi, i am using the speedtouch home plus 511e modem with prolink router currently, i am able to connect to internet using modem, but can not connect to internet using router, i heard that in order to connect it through router, you must set your modem to bridge mode, i had setted the modem to bridge mode before, but few day ago, my internet was down and i resetted the modem, and now i can not connect to internet using router, i try to set it to bridge mode by using the steps that i used,but it does not works at all, so can you kindly give me the step-by-step guide(simple steps) to set my modem to bridge mode, thanks!