I'm around when i can, when i'm not working on something or other responsibilities. Basically you won't see me so often on Monday and Wednesday, maybe during the afternoon and mid night for an hour these days. Should get more available during October, when i get a language course finished. I don't have a tight schedule, but i might get caught up with some work on the run at home.
In a nutshell, i'm on when i can be so the times can vary, but obviously from somewhere during the afternoon til midnight, if i'm not onto something. GMT +3 or +2.
edit: also got a headset mic, but i've never used it before. Will find out if it works with you guys ;).