If u want an unmodified game with just what was in the original but bug free, install FO2 and then just unofficial patch by killap...
If u want some extra content which was supposed to be in the game but wasnt implemented, install FO2 and then RP 1.2 (but u should wait, any day now there should be RP 1.3 coming out)
If u want pretty much a totally new game, install FO2 and then the Megamod.
As far as i know, after that just install the Resolution patch (its compatible with all of those), read the readme or instructions or whatevers inside ,change the resolution and enjoy the game...
If u want some extra content which was supposed to be in the game but wasnt implemented, install FO2 and then RP 1.2 (but u should wait, any day now there should be RP 1.3 coming out)
If u want pretty much a totally new game, install FO2 and then the Megamod.
As far as i know, after that just install the Resolution patch (its compatible with all of those), read the readme or instructions or whatevers inside ,change the resolution and enjoy the game...