If you use /^(.*)?:+\s(.*)?:+\s(.*)$/, then you will be able to use the variables $1, $2, $3 to access the different parts of the string. For example, try using this code:

$data = 'Sat Jun 4 05:56:00 BST 2005 INFO: PD/ZVKK Load: Starting.';

if ($data =~ /^(.*)?:+\s(.*)?:+\s(.*)$/) {
    # $1 contains the string 'Sat Jun 4 05:56:00 BST 2005 INFO'
    # $2 contains the string 'PD/ZVKK Load'
    # $3 contains the string 'Starting'
}
[download]

Another way to do it is with split, which still involves a regex, but a much simpler one. Here is some code:

$data = 'Sat Jun 4 05:56:00 BST 2005 INFO: PD/ZVKK Load: Starting.';

@fields = split /:+\s/, $data;

# $fields[0] is 'Sat Jun 4 05:56:00 BST 2005 INFO'
# etc...
[download]

I agree, however, with the others. Next time, show some code.