Forms?

Does anyone have any examples of sending data to a form and getting data 
back from the form using java, jsp, and what not?  Basically, I was told 
here by a developer who's waaaay busy now, and doesn't have time to go 
thru it further until tomorrow that in my application where I have a bunch 
of properties loading to a left pane, I want it to be clicked link like:
http://localhost:9080/BulkGarbage/LoadCust?custId=0900000000000100000001
That should invoke either a jsp, or a java program to go to the database, 
retrieve the record for that custId and show it on a forms page.  I know 
what I have to do, but I'm completely lost in how to do it.  Should 
LoadCust be a java program?  A jsp?  And how does it know what I'm sending 
it?  I'm sure once I get over that hurdle I'll be fine.  Plus, do I build 
my form using HTML, or should it be built by the jsp?  At any rate, thanks 
in advance.

Ron Power
Programmer
Information Services
City Of St. John's, NL
P.O. Box 908
St. John's, NL
A1C 5M2
Tel: 709-576-8132
Email: rpower@xxxxxxxxxx
Website: http://www.stjohns.ca/
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Success is going from failure to failure without a loss of enthusiasm. - 
Sir Winston Churchill