Yes, you can change the order in which things are done during boot. The easiest way to do it is to change the boot order number that determines the order in which the service is started and/or stopped. Read http://www.linuxjournal.com/article.php?sid=4445
to get a good handle on all of this....it's cool.
Here's the lazy guy's way to do this...by default, the network service start number is '10', rather early in the process. To change this, edit the network initscript, /etc/init.d/network, and change the start number , the '10' in the chkconfig line, to a large/later value...
> # network Bring up/down networking
> # chkconfig: 2345 10 90
> # description: Activates/Deactivates all network interfaces configured to \
> # start at boot time.
# chkconfig: 2345 25 90
now, to implement this change,
1) $ chkconfig --del network
2) $ chkconfig --add network
now all of your links in the various /etc/init.d/rcX.d directories are correct and the network starts later....but watch out! I've chosen 25 at random. You have to insure that no other services start up between 10 and 25 that require information from the network services....After you read the Linux Journal article above you'll understand what I'm ramblin' about....