connection problems with netgear?

[Rambo]

the router i use is a -range max dg834pn adsl wireless modem all the front lights work including the one that looks like a two link chain interlocked-the problem is when i tried to swap over to a netgear adsl2 dg834g v4 router i could not connect to the net and the two link chain icon would not light up is there a simple answer to this problem or not as i am not very tech savvy-when i switch back to my range max i still have trouble connecting but after a long spell the interlocked chains do light up so giveing me a chance to request help and a way simply to solve my problem-heres hopeing.thanks