Shell Programming and Scripting

Hi friends,

I have UNIX (HP-UX) server. I want to open a webpage (lets say www.unixhelp.com) on this webpage there is one checkbox. I just need to check it. and click on save.
Its just take a half a minute to do so in windows system. But I am wondering if this is possible though UNIX server.
Is there any way in UNIX to -

1) OPen a webpage- ( Lets assume it as www.unixhelp.com)
2) after opning a webpage,on top there is checkbox which has some mesage and two buttons
lets assume message is - "Select checkbox if you want to enter"
Lets assume two buttons are - "Save" and "exit"
3) click on that check box and then click on save button
4) Close that webpage

I searched a lot on google but did not find anything related to this topic.
Please let me know if this is possible or not.. If yes, then how ?

Thanks for your time

I just tried using lynx.

Code:

lynx <<EOF
go unix.com
q
y
EOF

I did not try to fill in any form though

In lynx, sitting on the checkbox:(Checkbox Field) Use right-arrow or <return> to toggle.

There is a command line option for post data as well.
I didn't see anything to allow selecting one of several buttons though.