TTL increasing (WL-500W)??

[mjkmjk]

I have WL-500W router. Unfortunately I can't configure the internet connection (Vista). Perhaps ISP made TTL restriction. How can check if it’s true and how can I ménage this problem? Is there any custom software for WL-500W router where I’ll able to increase TTL?

[wpte]

TTL should be a value in windows, I'm not exactly shure where.
I know that "tune-up utilities" can improve the TTL, but I don't really notice it:p