Questions on Guilds

Me and a couple of friends outside of Guild Wars have suggested that we should create a guild between us and of the people we know outside of the game. But I have a few inquiries about the benefits of being a guild.

1. Once you have paid the 100 gold and have decided upon a guild name and tag, I'm assuming that the only way you can change your guild name and tag is to disband and pay 100g again, is this correct? Or is there a way to change it?

2. What is the maximum number of people you can have in your guild, is there a limit?

3. Guild Capes - I here that they are expensive and that you have to pay again to change guild design. My friend says that you need to pay 2 platinium bars or something. If this is true how much is that in gold?

4. Guild Halls - What are they like? Pictures would be nice. I know that you can challenge other guilds to battles so that seems pretty cool and only your guild can access it. However, I've heard they are extremly expensive.

5. Guild Hall Locations - I here that the only location of guild halls is on a coastal island south of Lion's Arch. Is this the case? Or are their ways of purchasing guild halls on other lands?

This pretty much sums up the questions I have on guilds. Please answer these questions if you are a 'veteran' guild leader as I do not have the experience in this field.

Many Thanks

1. Correct
2. 100 (i think)
3. 2,000g
4. See attach. (Wizards)
5. That isle is the only one where Halls can be found.

Cool, Thanks for your help!