Uw

How do i get to the UW?

you character needs to have ascended (I.e. defeated your double at augory rocks) Afterward, head to the Temple of Aes when yuor region have favor (America, europe, Korea, Japan, or Taiwan)

Then do /kneel at the statue of grenth to make the avatar of grenth appear, talk to it and pay it 1k to transport you and your party to the UW (you can not bring henches there)

It's in the Dragon's lair, after you've passed the three tests in the desert. Do not ask for spoilers. I will not help.

Wiki is your friend
http://gw.gamewikis.org/wiki/The_Underworld

Once you Ascend, (desert missions and such) head to Temple of The Ages in the middle of kryta (TOA for short) and wait until your country has "favor" (it will tell you who has favor when you get to TOA) now, if its your country, join a group and there are two avatars, one is balthazar and one is grenth. One takes you to Fissure of Woe, the other to UW. Im not sure which does which, but your party leader will know. Now, they both charge 1 or 2 plat (I cant remember exactly how much) to get in, so if, for some crazy reason you ever go solo or are a group leader, bring the money. Now, once you get in, you should either be in a "trapper group" or a "two man UW group" otherwise, the AAtxes (primary residents of the UW) will kick your rear out of there faster than you can say "ouch".

That's almost misleading...

I have already been acsended (way past that), but do i have to always pay the 1k to get to the UW? Or can i just travel there with my map?

Yeah, it was kinda wrong. I meant, you can get in the Underworld from the Dragon's Lair through the tomb of the Primeval Kings, and it doesn't kost you one dime. Underworld is Underworld, right?

I was checking out the maps of the uw, what is with all the Ms?

http://www.guildwarsguru.com/gallery...?album=3&pos=0

No. The Ruins of Tombs IS NOT the Underworld.

You must pay 1k for each time you go there.