i seriously need help here

i just bought a WRT54GL v1.1 and i flashed the router to DD-WRT v23 SP2 and straight away i connect to PC without reading the instruction and CD although it says there "run cd first before connecting cables"
now, i'm having a bit of trouble here
the layout of my internet connection:
Streamyx -> Linksys AM300 -> Linksys WRT54GL -> 2 PCs
i understood that WRT54GL still needs a modem to work with
once i plug into the "internet" port, i get no connection from my internet
but if i plug into the normal ethernet port, everything will lag a bit (ping is 500ms to yahoo)
what should i do? please advise...
thank you
*both of the routers are same IP - 192.168.1.1
This post has been edited by andyjyneo: Aug 9 2007, 09:56 PM