Aha! No I don't have the OBSE installed (perhaps the other mods don't work either and I don't realise it).
Do I just need to install it like it says http://cs.elderscrolls.com/constwiki/index.php/Category:Oblivion_Script_Extender and everything will work fine or do I need to start from scratch. ie: clean copy of oblivion, then OBSE, then mods. Also if the former will I need to go from the tutorial again to see the effects take place (this was a requirement of one of the other mods IIRC) .
Thanks for taking the time to help kuertee.
Yeah.
Try simply adding OBSE then running Oblivion the "special way" so that OBSE is active in the game.
I don't really remember what that "special way" is because I use OBMM to manage my mods and launch the game for me.
(I think it requires creating a Shortcut that links Oblivion to OBSE.)
If you don't think you game is working as you expect, then give the readmes of the mods you have a once-over (scan through them) just to get the gist of what you need to get them running properly.
Once you're comfortable with mods and have the general idea about mods (it is a bit of an extra step from running the non-modded Oblivion), look-up BOSS to help you sort out your mod "load order". Because some mods modify the same "reference" in Oblivion as others, a properly ordered mod is important so that the different mods work as intended.
That's kind-of the general way I suggest players new to mods to get familiarise with using mods. Get familiar with the mods, the lingo, the files by quickly trying something. Once you get the general idea of it, then start learning other things like BOSS and load-orders, generating LODs (an object's level-of-detail in the terrain), cleaning mods, Wrye Bash and BAIN, etc... There is a bit to it, but you'll find learning it in stages easier (try first, if it fails, read the read-mes, then learn others) and less frustrating than taking it all in at once.
I hope that helps. And sorry, if you know all this already. I really don't know your level of knowledge with mods. I'm just guessing.