the international link and backbone is still tmnut related and... theres still a long distance between US to msia.

that said, metrophone being well, not shitty like tmnut is still well worth the switch. ESPECIALLY local connections (eg: local seeds/peers on torrents) you'll be BLAZING fast with LAN-like connections (since its on LAN based fiber optic medium) speeds

its not available everywhere.

theres no local WoW server, what you think then?

yes and no.

eg:
if your fps is low due to lacking rams or processor power (single core especially), it will cause the entire system to be slow and yes that will also drag down resources provided to your networking components such as your network card hardware, TCPIP/NAT/DNS services/protocols etc.
and that is enough to drag down network stability/give out heavier latency.

i have vista amd ill say no to xp anyday

the upgrade's pretty obvious. if ur running vista + WoW, your ram usage will be around 2gb or at least very close to it, and that will result in a lot of HDD swappings and notebook hdd's are 2k RPM slower than desktop counterparts, and even on desktops, rams goin HDD vram swapping = HUGE performance drop.
the 1 more gb on ur new laptop would give it enough buffer to avoid vrams.

then, theres 1 generation upgrade from geforce 7 > 8. if anyone is familiar with lowend cards (geforce 7 comes to mind, and yes i do have a spare geforce 7200 GS, due to my old GTX RMA), running vista, or aero in particular(which isnt exactly high end graphics) will lag the shit outta you. needless to say, to a full 3D game over a windows interface, it will be worse. the 8 series, even though lowend ones, would still be a lot more decent than an old 7 series.

processor, which is also a crucial component in WoW, especially those that raid/pve a lot, and runs on a good list of UI addons with meters and what not, will be soaking up a lot of processor power. and the upgrade of 600mhz with 1 more mb cache with faster FSB speed is a HUGE upgrade over the old laptop.