Thanks a lot of your reply and advices
No I haven't worked with mesh software yet...just a beginner. So I try to find from where to begin.
I believe that creating mesh must be not so difficult as it seems because there are a lot of people there in SL that create mesh clothing...also I am an easy learner so it will not take me much time.
I will see the tutorials definitely but the question still remain...there are any ready mesh avatars that I can use? or I must create my own full avatar in blender?
Thanks again for your reply!