[HPADM] Sun Solaris User Group

I am sorry to post this question here. I am an HP-UX admin. Lucky me that my boss just gave me 2 more Sun Solaris to manage without any more money. Have no ideas about Sun Solaris. I'd like to know if some one out there know a good Sun Solaris users group like this HP-UX users group? I googled and found too many and don't  know which one to choose. Basically here is my question on Solaris.
 
#export DISPLAY=234.23.234.234:0.0
#admintool
Error: Can't open display:
 
Ok, You can yell at me now. Thanks for your help!
 
Stephanie