Server spawn protection option...

Quick question...... You know how in the bukkit server property file there is a line to define how many blocks you want to protect around spawn? Is there a way to use that to define multiple worlds? I know I could use world guard - I did that but my server got hacked anyways. Seems like it's safer with the standard server block protection.

O Jesus I just realized I worded that badly.......lol sorry.

What I mean is using the standard server config file can you define different block protection values for each world around the spawn? right now it seems to me if you type say 100 in there it does 100 spawn block protection for all worlds

EDIT by Moderator: merged posts, please use the edit button instead of double posting.