@shriniketsarkar
I have posted a guide on this:
http://www.indiabroadband.net/bsnl-b...er-wrt54g.html (Setup of ADSL Modem/Router UT-300R2U with Linksys Wireless Router WRT54G)
The topic covers Linksys router but if you follow the principles you should do same:
a) First setup UT-300R2U in bridge mode. Use the Wizard with default settings.
b) Now connect Netgear router to UT-300R2U (Lan port of UT-300R2U to Internet port of Netgear)
c) Connect your PC to Netgear router via LAN cable and open the Netgear web setup page
d) Change router IP settings in LAN Settings and set appropriate IP ranges. DHCP must be ON.
e) Go back to Basic settings, set up the PPPoE options
f) In Wireless Settings, name and enable SSID, WPA security, etc.
(At this point, you should be able to connect to internet)
g) Change 'admin' password in both routers.