Hello Gissberg,
with KIX there aren't so many small scripts anymore.We put them together in one big script (/opt/kix/bin/kix.Console.pl).
To execute the pending Check, you can let your cron execute the script with the following parameter:
sudo -u <web-User> /opt/kix/bin/kix.Console.pl Maint::Ticket::PendingCheck
This does the same as teh old PendingJobs.pl script.
Best regards
Richard