A few weeks of torment after attempting upgrade please help!

Hello,
well i have been trying for quite a few days now and I still cannot find the solution, I am getting a bit desperate now so if anyone could help, I would really appreciate it.

I recently upgraded http://www.stylish-bathroom-cabinets.co.uk from 1.3 to 1.3.6 and now I cannot get it to work correctly. There are several errors that I need to address before I can take the shop live.

Firstly, the stylesheet has become modified by the upgrade and I cannot put my finger on exactly where, but if you look at my site you will see that that 'home' 'sign in' and 'search' boxes are in the position that I want them, however they should be behind the Blue bar, ie have a z-index of 0 for the white bar and a z-index of 1 for the blue bar, but I don't know where to correct this.

Secondly, if you go into the shop itself, for example click on Graceline you will see the remnants of the brown/gold default template, I cannot get this back to what it was (even though I tried re-uploading the WHOLE of my BACKUP site) at one stage ... I just don't know what else to try or where to look to fix it.

Thirdly, if you click on the 1300mm mirror in the same page, you will see that I am using the Tabbed menus contribution (which seems to work well) i still have the same problem as the second problem outlined above ie the remnants of the default style, so I would guess fixing the second problem above would also fix this one?

Finally, and perhaps most importantly I still have the Country bug in this update, ie someone can fill in the login screen as a new user but they are unable to get in as they keep getting re-directed to the login page and the keeps telling them to choose a country ...

I have tried and tried with this, but I am obviously missing the important files to change, I realise a lot of it will be that some files were not updated (probably some of my own template files) however to fix this I need to know exactly where to look to fix it.

Thanks for any help.

Paul

I took a very quick look at 1 to 3 and would suggest that they may go away if you rationalise your stylesheets. stylesheet.css and stylesheet_new.css are covering the same ground and may explain why you have remnents of the old design still showing, as well as why some of your changes aren't having the desired effect.

Thank you so very much Kuroi, once you pointed it out to me, I used the web developer tool in FF and there was that stylesheet_new.css trying to be all helpful! I renamed it and all seems well with the style on the page, many thanks.

For anybody else reading this, my final problem in the original request still stands so please forward any view you may have, thanks.