At the time of answering of this question, 4th of March 2010, it would cost €0.82.
Dublin in Ireland and London in England are in the same time zone, so it would be twelve o'clock.
There is no direct ferry from London to Dublin. You can get ferries to Dublin from Holyhead or Liverpool. You would need to travel to them from London to get a ferry. The total distance, including the ferry, would be about 586 kilometres or 364 miles, though that would depend on your route.
Not in the Dublin in Ireland. There is a Dublin in England, so for the people there, the answer would be yes, but I am sure you are referring to Ireland, so the answer is no.
If you took a bus from Dublin to London you would never get there because you would probably die. You see, Ireland is its own land mass and you can't drive to the United Kingdom. I would suggest you take a geography class prior to traveling.
There is no Towney Street in Dublin, Ireland. Check the name and spelling or be more specific as to which Dublin you are talking about, as there are several in the world. There is a Townsend Street in Dublin, Ireland. It would be: Townsend Street, Dublin 2, Ireland.
You would drive to one of the ferry ports in Wales or England and get a ferry to Ireland. You can go from Fishguard to Rosslare, Holyhead to Dún Laoghaire or Liverpool to Dublin.
That would be Trinity College - The University of Dublin
Ireland is an island and London is a on neighbouring island. There is no connecting bridge, given the distance between them. So you cannot get a train from London to Ireland. The best you could by train, is to travel by train from London to Holyhead or Liverpool, and from either of them take a ferry to Ireland. You can also look at other ways, such as flying. Yes you can do it however, the only simple way from London is: the London to Fishguard train that stops in Bristol, Cardiff and Swansea. From Fishguard you will change to the Stena Ferry for Rosslare. Here you'll get a train to Dublin where you can change for all main stations in Ireland
The most well known Dublin is the capital of Ireland and it is not in the United Kingdom. There are a number of other Dublins in the world, including one in England. That Dublin would be in the United Kingdom, as England is in the United Kingdom.
If you are talking about Euston Station in London, to Dublin port, then it would be an international journey so you may need a passport. It will depend on your nationality. If you are talking about Heuston Station in Dublin to Dublin port, then it is a journey within Ireland, so that journey itself would not require a passport, but you may have needed one to get into Ireland in the first place.
Dublin city would be the city with the largest gay population in Ireland.
Ireland does not have postcodes. Dublin 5 is the postal district that Killester is in. So your address would finish as: Killester, Dublin 5 Ireland.