Hi, i have found useful information here:

and here:
Now i have some question to you:
1)The packet have this form?
'0033000700000' + userid + '00000020' + dosid + '0005352e342e33'
2)if yes the first part (0033000700000) what mean? and this (00000020)?
3)dosid must be converted in hex?
4)where and how i can extract clientversion?
I know that i annoying you... I'm sorry!
Thanks in advance!
Help