Update your Java. Use the JRE offline installer & remove your old Java version before you install the new one.
http://java.sun.com/javase/downloads/index.jsp

Your modem doesn't have a firewall, recheck your Windows firewall config.
Firewall setup

Starhub have caused problems for other people. They're known to shape bandwidth, maybe they're doing some blocking too? Try connecting at different times of day/night. You could also change ports & see if that helps...change LW's listening port to 64049, or something in the range of 49152 - 65535.

OK now i have already done all the required stuff, but still no search results and the globe still behind the wall of bricks and no green bar!

I have change the listening port as above tho.

Im running on version 4.12.11 and my java version is 1.6.0 now.

Should i delete all limewire files and reinstall or any other suggestions?

Thanks.

Are you sure there's no other firewall? You're not using a router as well as the modem? Is there any firewall provided by Starhub (some ISPs do include a firewall with their service)?
Seeing that firewall icon doesn't necessarily mean that you won't be able to connect. If it's a connection issue with Starhub, there's not much we can do except advise you to change ports or call Starhub & find out whether they're blocking p2p.

If you like, you could try reinstalling LW. Or try the Beta version of LW. There's no guarantee that it'll fix things, but give it a try if you like. If you do reinstall/install a new version, delete your preferences folder. See point 3 below (also point 2 if you've used older versions of LW in the past). After that, you'll have to go back through LW's options & reset everything to the way you like it.
Fixes for LimeWire

Can you use any other p2p apps successfully?