Plugin Options Page problems

Hi bloggers,

I’m making my own personal WP-plugin.
Everything is going nice and dandy, until I ran in to a little problem.

I have made a form, so I can update some text in MySQL.
But what do I do with the form?

Do I have to make a function or do I have to make a new file, and transfer it with the form action to the file?

I hope you understand what I mean.

Best Regards
Aris Kuckovic