Being a Mac/Unix guy, my windows is a bit rusty. But I think that you do it like this.

- open a dosbox (choose "run" from the start menu and type "cmd"
- enter "pathping <ip address>, or might even work with an url like firstgenfirebird.org.

You should then get a list of routers and their response times. Here's an example (note the unusually slow response on the second hop). A decent response time shouldn't be higher than 20 ms.

NM22423:~ goran$ traceroute comhem.se
traceroute to comhem.se (194.237.212.165), 64 hops max, 40 byte packets
1 10.0.1.1 (10.0.1.1) 7.711 ms 1.858 ms 1.826 ms
2 nas-doc-1-bundle50.comhem.se (83.250.192.1) 5.957 ms 8.500 ms 9.181 ms
3 nap-bb-r-01-to-nas-ubr-01.comhem.se (83.255.242.82) 627.914 ms 614.330 ms 818.978 ms
4 nap-pr-r-01-to-nap-bb-r-01.comhem.se (83.255.252.194) 24.593 ms 17.593 ms 11.433 ms
5 netnod-ix-ge-a-sth.skanova.net (194.68.123.111) 7.163 ms 7.799 ms 7.700 ms
6 fre-c5-link.se.telia.net (81.228.72.34) 11.403 ms 11.129 ms 10.793 ms
7 fre-d1-link.se.telia.net (81.228.72.35) 8.463 ms 7.795 ms 9.454 ms
8 comhem2-102931.k.se.telia.net (212.181.153.150) 9.685 ms 9.753 ms 11.963 ms