Parsing a local file

I am trying to build script that will parse a file on the user's computer.
There are 2 things that I am not quite sure about.

1) How to read a file on the user's computer, and not on the server.

2) How to parse a line similar to the one below:

"7/29/2003" , "Report Title" , "Page" , "Agent Name" , "5200" , "30" ,
"3:30" , "" , "" , ""

Now, in this line, there are items that I would like to discard. As well,
there are items between the "s that I would like the parse further. Below
is how I would like it parsed

"$month/$day/$year" , "DISCARD" , "DISCARD" , "DISCARD" , "$agentid" ,
"$calls_taken" , "$avg_call_time" , "DISCARD" , "DISCARD" , "DISCARD"


Any help would be appreciated.

Thanks,
Jason