display message upon plugin activation

hi!

i’m developing my first plugin: it will not be working upon activation, as the user will need to review some options before being able to use it. Therefore, i would like to display, right after the “plugin activated” message, the link to the plugin options page, or even better, be able to modify this activation message, and on my plugin row in the plugins table.
Can you tell me how to do that?

Thank you!!