Exclusive icons (how) and a problem with date in rus lan

[AERUSUA]

I have two questions:
How to make each category an exclusive icon ?
And I have a trouble with russian language, board doesn't show the date in a proper way, like on this forum, how to fix it ?

[Arbalot]

for first one
http://www.simplemachines.org/community/index.php?topic=7370.0

[AERUSUA]

Arbalot thx a lot!