Friends List editor?

[Anarchy2k5]

now i am on the hunt for something that will allow me to edit my friends list so i can group people into different categories, such as separating guildies from other people, kinda in a drop down menu fashion with a collapsing button, so in essence my friends list would look like this:

[-] Guild Members
|--name1
|--name2
[+] Real Friends
[-] Friends
|--name1
|--name2

[Anarchy2k5]

<.< bump >.>