hi ...Plz help me..

I have 2 big issues ....

After i move a ticket from one queue to another queue,i want that queue owner must be ticket owner.

Now i m doing this manualy through "Change Owner " link.

I want it to be automaticaly done ....

If any one has idea @this ...plz Help me.?

When agent want to search something, he must be able to search for his own tickets or the tickets in his own queue.

Can i do this?(as now any agent can see any others tickets...it will be problematic afterwords)..

SO plz help me out..