I have have used LW before and it worked fine. But then it started not connecting and freezing my internet. My computer says im connected to the internet but once I open LW it stops all internet operations and wont connect. help?

1.Vista (admin)
2. Windows Firewall
3. 2 gigs of ram
4. 100 gigs
5. DSL wireless
6. Netgear N wireless router model #: F5D8236-4 v3
7. Home
8. LW basic 5.5.4 and Java version 6 update 21
9. Time Warner Cable
11. no other cpus.
12. im in the middle. not new but not experienced either
13. (a) no wall. (b) 0 they are all grey. with a red line slashing through the middle.
14. no idea.
15.windows defender
16.US of A
17. no no no and no