my ansi 92 sql equilanent to TOP gets error

[Jaime Reza]

simple table
Users with 2 columns
(userId, userInfo)
userId is integer autoincrements.

I want to do a equivalent of select top 3 from users
this works in mssql


SELECT U1.* from users U1,users U2 WHERE U1.userId = U2.userId
AND (3 > (SELECT COUNT(U2.userId) FROM users U2 WHERE (U2.userId < U1.userId)))

but barfs in mysql