Did you create table having all columns you want??.. After creating table, use the following query to insert data from reg, userverify tables to userAcc table:
insert into [userAcc](username,password,etc)
select username,password,etc from reg
insert into [userAcc](secretcode,securityques,securityans)
select secretcode,securityques,securityans from userverify
You need a common cloumn in both the tables(reg & userverify) to join them. Otherwise join will be all possible combinations. In this case you can use above query or u need to create a column common to both tables.
Read more about JOIN here:
SQL Joins[
^]
http://msdn.microsoft.com/en-IN/library/ms191517(v=sql.105).aspx[
^]
Mark it if you find this helpful.