Different View of ASP.Net Page in Internet Explorer

[WarrenT]

I created an asp.net application and published it sucessfully on a local webserver. The problem is, that any page of the application looks different in internet explorer. I know that the look can be different in different browsers like firefox, ie, chrome...The funny thing is, that it even looks different in the internet explorer on two different pcs.When I open it on my laptop, the page looks 'normal' (since i wrote the css on my laptop, so i know how it should normally look), but when i open it on a desktop pc connected to the same lan, it looks very different (some objects are wider or higher). Both IE Versions are the same (9.0.8112.16421).I really don't know how this is happening. Begging for some help, please!