Some customizations on creating tickets

Hello Everybody - When a user creates a ticket through
the web interface I don’t want him/her to see:

Requestors, cc, AdminCc, Subject, Owner textBoxes at
all.

Instead I want the values hardcoded according to:

Requestors: the userID the user is logged on as
cc: all users in the group except the user him/herself
AdminCc: I used the scrip in contributions and it
works, text field only needs to be hidden
created under
Owner: user creating the ticket should be the owner by
default

I’d appreciate any help!
Thanks,
Weqaar Janjua

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