There is an unofficial save game converter, but I think it only works on US saves and not on any of the European versions.
You can use the US executable with the UK version if you are bothered by the CD lock of the latter.
Hopefully this guide should avoid those pitfalls with some margin to spare.
You might want to go for the US patch, because of the CD lock thing.
(Actually what I'd really recommend is not having anything to do with that product in the first place.) I also strongly recommend, if you have any other version than the US one, that you download the so-called children patch.
This set of files, which is not technically a patch at all, will add the in-game children which have been removed from these versions (for some obscure reason of law or policy which apparently did not apply at all to Baldur's Gate, where you can roast kids with Fireballs all you want).
You don't need any additional code, it's all there already.
Virtually every piece of information or advice presented here has been verified in personal testing or playing experience, although I have of course consulted rather a lot of existing walkthroughs and board postings for snippets of information and things to try out.
Sadly, many guides are either poorly written ("klammth this place stinks btr get sum quest!!! "), give embarrassingly bad advice ("So that's why I always tag Throwing, First Aid and Barter"), include patently false information ("If you keep the Pipe Gun in one of your active item slots it will give you Agility 3, it doesn't work for all characters"), or are glaringly incomplete ("I've heard there is a place called New Reno in this game but I never found it").
Fallout 2 allows you to play your character the way you want. If you want to play an evil bastard, you can (Yes, you really can hit children in the groin with a sledgehammer).
If you want to play a moron who can hardly talk because of his low intelligence, you can.
Version 1.3 Written and coded by Per Jorner Let me enlighten you, grasshopper.