combine this 2 simple querys into 1 query for performance.

[oshri cohen]

hi friends.
first of all - sorry on my english ;-).
i have table calld users with the following records :

user_id user_name
1 alex
2 robert
3 sam
4 mike
5 jhon
6 kevin
7 blink
8 jek
9 stefeni

i want to write query that give me the 5 next users of specific user , for example :
"select * from users where user_id>2 order by user_id limit 5" give you user_id 3,4,5,6,7 - its work fine when the user_id not in the bottom of the table (like id:6,7,8,9)
and hence when the user_id in the bottom i need always to check if i get 5 users, if not i select the rest of the users from the start, circular way.
for example: the five users that come after user_id=8 are: 9,1,2,3,4

today i'm doing thats with 2 query, anyone think that can be done with one query...?
your help is welcome.