Suggest you try the fedora solution mentioned here:
http://forums.fedoraforum.org/showthread.php?t=57764
Which is to create a file like following:
$ cat /etc/sysconfig/autofsck
AUTOFSCK_DEF_CHECK=yes PROMPT=yes AUTOFSCK_TIMEOUT=10 AUTOFSCK_OPT=""
From a quick read of the relevant parts of /etc/rc.sysinit on one of
my centos 4.4 systems, it looks likely this will work here too- but I have not tested it at all.