Couple of pre buyer questions

1)
i know you can't make numerous accounts with one CD but if I were to install the game on one PC and make an account, then install the game on another PC would I be able to use the same account?
2)
In the city and town areas, can you see everybody on the server walking around? Or do you only see each other when youve made a party.
3)
I got min spec of 256 Ram, how well will the game play presuming everything else is at the recommendation level.

1) Yes, A-Net saves your account information on their servers, not the computer on which you installed it.
2)In the cities you can see everyone in the server walking around. But when out of the cities, you get your own private map with your party and play from there.
3) 256... Guild Wars is going to hit you hard. How about going for a 512 .

However, in regards to part 1, you cannot log on to the same account twice. You can only ever have 1 character online per account, so you'd only be able to play on one of the computers at a time.