UNIX for Dummies Questions & Answers

Hi guys,
I´m a newbie in Linux, but I´m trying to solve some problems studying on my own, but I´ve had some problems with AWK.
Look, I have one single backup log file per server and I want to make a daily delection from the last backup job to show in a intranet of my work.
The log files are from ArcServe (Windows), so I´d already made a batch file to export those backup logs to my Linux server which already have Apache running on it.
As you can see in the following code, I´d put some lines of one of my servers. The backup log are so extensive, but what´s really important I put in here. The first and the last line of this code, I suppose that is the key to select and export to a file for publish in my internal web page.
You need to keep on mind that is only a piece of the backup log.
My question, how to make this functional? I`ve already had some help in export the right fields, but work with another piece is one thing that I can´t get on nowhere.

Code:

[05/19/2009-22:00:05 ,1,0,0,0,-1,2,3,0,0] [JOBQUEUE]: Status changed from Ready to Active [Job No: 2] [Description: ]
[05/19/2009-22:00:14 ,1,3164,0,0,-1,2,18,0,0] Run Backup Job Scheduled for  5/19/09 at 10:00 PM.
[05/19/2009-22:00:16 ,1,3164,0,0,-1,2,18,0,0] Start Backup Operation. (QUEUE=1, JOB=2)
[05/20/2009-02:49:23 ,1,3164,0,0,-1,2,18,0,0] Backup Operation Incomplete.
[05/20/2009-02:51:04 ,1,3164,4,0,-1,2,18,0,0] [CAT] TUESDAY [ID:5EDD,SESSION:4] is merged.(files=1986)
[05/20/2009-02:51:09 ,1,3164,5,0,-1,2,18,0,0] [CAT] TUESDAY [ID:5EDD,SESSION:5] is merged.(files=681)
[05/20/2009-02:51:12 ,1,3164,0,0,-1,2,18,0,0] Run Command: cmd /c C:\Program Files\CA\BrightStor ARCserve Backup\LOG\coletalog.bat.
[05/20/2009-02:51:13 ,1,3164,0,0,-1,2,18,0,0] Reschedule Backup Job for  5/20/09 at 10:00 PM.
[05/20/2009-02:51:13 ,1,0,0,0,-1,2,3,0,0] [JOBQUEUE]: Rescheduled for  5/20/09 at 10:00 PM [Job No: 2] [Description: ]

To export this log in nice way, this is the script that I had help......
nawk -f export.awk Arcserve.log
export.awk:

Code:

BEGIN {
  OFS="\t"
}
NF {
   pivot=index($0,"]")
   split(substr($0, 2,index($0," ")-1),a, "-")
   print a[1] OFS a[2] OFS substr($0,pivot+1)
}

What I only need now is some way to separate the backup jobs.
Anyone have any idea?
Thanks