Questions about Managment Reports (vB 3.6.5)

[hamidkh]

Hello;
I am using from vB 3.6.5 and I have some questions about report generator.
Please help me about these questions because I did open a forum and I need to report from my site.
questions:
1- can I connect to my sql tables and run query for reporting?
2- do you know add-on for Qes. 1?
3- what add-on or hack can be useful for manager reporting and which one of its can export reports to Excel?
And please advise me for blow question:
4- what are your advises for increasing user registration.

thank you for your co operation and excuse me for my English.

Hamid Shayan