Weed™ said:
How do I figure out which one I have?
I have Vista but I'm trying to install this Windows 7 theme and it says I need x64.
The easiest way to find out which x base you have is to follow theses steps.
1- open the start menu
2- go to my computer
3- loo on the top of the window
4- Click system properties
* When this window is open you will be able to see your basic system information.
Now with your question, comes with an answer.
If you are trying to install that theme and it say that you need a x64 base, then it's most likely that you are running on a x86 which is 32bits.
So I suggest that you find a theme that is compatible with you system base x86. This can resolved the problem.