No guarantee can ever be given that you will not have problems, for anything. As long as your hard drive is in working order and you partition the drive correctly, ubuntu shouldn't have any problems installing.
The installer will do that for you.
When you first install Ubuntu, it will walk you through the steps to install it and keep your other OS installed. Then when you boot your dual-boot system, you can simply select Ubuntu.
Yes, just format your Hard Drive and install a fresh copy of Windows.
Grand chase is ran by a EXE which is executable format ubuntu does not run EXE format
Your question isn't exactly clear. If you want to install Ubuntu natively onto a partition, you must format the partition or make a new one. It is quite possible to resize the XP partition and make a new one without losing data on the XP partition. Ubuntu already includes the tools to do this.
Ubuntu uses many file formats, many of which are shared with Windows and Macintosh. The partition format the Ubuntu generally uses is an ext4 filesystem.
Ubuntu releases are versioned based on their release date in a generally 6-month cycle.The format is: YY.MM.By this format, Ubuntu 10.04 was released in April 2010.
Yes - in the process of installing Ubuntu. If you want to format and nothing else, take a look at GParted (google).
Yes. This is the preferred and most common method for installing Ubuntu.
No, XP will format the disk if that's needed.
No, you do not need to format it. It will install just fine if you don't. Just make sure you don't move files and folders around that have been installed as this may mess up the whole installation.
WAV is a file format. There is no difference between a WAV file on Ubuntu and a WAV file on Windows.