query help please
 

I have a need on my site where I manually subscribe users to certain forums (not individual threads) by using the queries below:

Examples:

To subscribe UserID 12 to ForumID 34 using immediate updates:
[sql]INSERT INTO subscribeforum (userid, forumid, emailupdate) VALUES (12, 34, 1)[/sql]


To subscribe ALL users to forum ID 34 using immediate updates:
[sql]INSERT IGNORE INTO subscribeforum (userid, forumid, emailupdate) SELECT userid, 34 AS forumid, 1 AS emailupdate FROM user[/sql]

this gets time consuming when their are many forums to subscribe them to. Is there a way I can specify more than just one forum ID like the above? like instead of just 34, also specify 35,36,38,39 in each of the two queries above? Thanks for your help!