Hello RD_Bettschen,
You should be able to " install alongside " other operating systems, such as Windows7.
However if you have tried to install from an iso/liveDVD and not been shown an option of installing alongside then your Windows7 has been set up to take over the whole hard drive.The iso needs space to work with, unfortunately Windows is designed to take over the whole hard-drive, even though it doesn't need any more than a fraction of it to operate.What you should get when you first start to install is a message that says something like , " there are other operating systems detected on this computer-do you want to install alongside--- erase hard disk and install Ultimate Edition or other ?".
If all you get are the latter two then you need to use Windows Disk-utility to free up some space on your hard-drive or gParted ( included on the live DVD/iso ) to do the same.Ultimate edition needs a separate partition from Windows as it does not use NTFS ( Although it can read NTFS )
If you have freed up some space on your hard-drive then you should see all three installation options available when you next try to install. This stumped me when I first tried to install Linux. The sad fact is that Microsoft doesn't want you to install anything you haven't bought from them. I found the solution by doing what you have done and going on to a Linux forum.There should be no need to pre-format the empty partition-that should occur automatically when you then install alongside Windows7.
In closing, two things, first 3.2 is not necessarily the best choice if you haven't used Ultimate Edition before. 3.2 is "experimental",( i.e. it is not as stable as other versions ) and as such, is better suited to experienced linux users. I would personally recommend Ultimate Edition 2.9 or 3.0.1.( Available from the forum links, or direct from " sourceforge" )
Any other problems-get back in touch. Someone will be able to get you up and running.
![Razz :P](./images/smilies/icon_razz.gif)
All that I am or seem is but a dream within a dream.