DNS trouble last hope

hi everyone,

sorry to start another thread on my DNS issues. as yet, they are still unresolved.

here i am writing this from my windows PC because trying to work my way through the messages on Usenet on my linux PC is now a sorrowful ordeal as well.

so again: - surfing sucks, some websites timeout - pinging by name (yahoo.com) times out. pinging by IP address works flawlessly. - can listen to internet radio (connected with xmms by IP address to the website) and yet, can't even surf to or ping the website by name. - installed mepis linux on my brother's PC along with Windows 2000 dual-boot. and he's given up on linux after a week because of the exact same problems i'm having.

we both have an ADSL connection, shared through a router. he's got a netgear and i've got a d-link.

- from both our windows PCs everything works flawlessly, from my iMac with OS X everything works great. only in linux am i having problems. i've been using linux as my primary OS for 4 years. and i can't seem to figure this out. because of the nightmare it's giving me, and not getting any answers from google or here, i may have no choice but to get rid of linux myself.

does anyone have any suggestions? at all? is no one else having these problems when using a router to share the internet connection?

if i didn't mention this before. when i go straight from the ADSL modem to my linux PC everything is seems fine. so i'm pretty damn sure it's a problem with Linux and my router. but what??? and not just my router. i've tried a d-link and an SMC router, and my bother has a netgear. and why do my iMac and my Windows boxes work without a problem?

thanks for any kind suggestions.

i'm using ubuntu and my brother's using mepis.