Hi, and welcome to LQ!
Wine should be in Ubuntu's repositories, so you can install it with Synaptic or apt-get or whatever you use to manage your software.
Keep in mind that Wine is not an emulator (in fact, that used to be what "WINE" stood for before the name was changed to sentence-case
). It is a compatibility layer that allows Windows applications to be run in user-space under Linux-based operating systems. Put simply, Wine acts as a sort of "translation layer" between the two OSes, intercepting system calls from the Windows program and translating them to Linux system calls. It does not attempt to emulate the Windows NT kernel in any way, it just implements the Windows API in Linux user-space.
Even so, it isn't complete. Granted, it has come very far, and quite a few Windows programs
do run well under Wine, but don't expect
every Windows program that you have to run under Wine.
Just my advice