Sub queries in MySQL

I want to run a query to fetch out a navigation menu on a site I am working on. I always have paranoia of destroying the db with ineffecient queries... Now, as I understand it, sub-queries is a bad thing. They are very slow in MySQL?? This menu I am making will be displayed on each page the user is looking at, but the query won't be too big. Only has to loop through 14 - 16 rows In one table sorted by 6 - 8 rows in another table. I have a mainmenu table. ------------------------------ ID Title Url css Number <-- order on page Alignment ------------------------------ And a menu table: ------------------------------ ID Title Url Css Number <-- order in the sub-menu. Mainmenu_id <-- linkage to the mainmenu table... modulid ------------------------------ Does this sound like a bad idea? Should I reconsider this, maybe putting everything in one big happy table? How do you think this would be on a server client serving 1000 pages a second....? Any thoughts or urls or whatever would be greatly appreciated. :) Sincerely yours : Trond E. Hundal And, btw: I am very sorry for the spam post about the virus... Hehe... Very sorry indeed.