Need some help with SQL (more specifically MySQL)

Question 1
How would I determine if the Now() is X Date but before 8 am

ie.

SELECT EventID FROM Event WHERE Now() = Today AND Now() < 8am;



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Question 2

Is it possible to keep my VB project updated on some sort of timer without lagging the program.

My database has over 2000 contacts and I want to be able to autoupdate the treeview I have that has all the contacts in their vaious subgroups updated semi-regularly without lagging the server and/or program.

When I first log on, connect to the database and then select all the contact it takes a good 10 seconds.

You would use a datetimestamp.. THis posts the Date and Current Time to the DB... Then you just use the Date() and Time() functions of VB to put together a string in VB, then say "SELECT * FROM tblMyTable WHERE DateTime = 'TheTime'"