I have already tackled about installing an operating system in VMware Workstation using Windows 7 and you can see it here. You just have to choose Linux in Guest Operating System section and choose Ubuntu as the Version.
If you successfully uploaded the ISO image file, you should get this:
Again, a series of steps will be shown and all you have to do is to choose the option correctly until you finished the installation and were able to install the operating system.
The image below is the Graphical User Interface of Ubuntu.
For a first time user, I immediately browse what it can do. We were also asked what will happened if we download a file from the Virtual Learning Environment (VLE). The VLE is primarily what Anglia Ruskin University students and stuffs use to communicate each other such as downloading learning materials that the lecturers uploaded.
The downside about this operating system is that some files can not be opened like the .docx which is the Microsoft Word Office. The image below shows the error message I got when I opened the file.
References
Wikipedia. Linux. [online] Available at: < http://en.wikipedia.org/wiki/Linux > [Accessed 16 March 2012]