[Mldonkey-users] some help, please

[Edu]

I'm new on such kind of software and I would like to start to be on 
that comunity, can you tell me how to install the Mldonkey2.5-4 in my 
computer.
I have a Mac OS X.3.1 in a powerbook G3

I know I have to create a new directory, can I create a folder in my 
external hard disk? I'm a bit lost


thank you in advance.

Edu