Installation of Oracle 11 Release 2 on Windows 7 64-bit

I never had so much trouble installing an Oracle version on a Windows OS as I had with installation of Oracle 11R2 on Windows 7 (64-bit). The issues I faced were twofold:

1. First I got messages (during installation of the software) that files could not be found in the target oracle folder
2. Second, after finding the solution for the first annoyance, I spent two hours finding out why everything installed correctly, I could create a database, but could not start a Listener. I am an Administrator on my laptop. The errors I got at starting a listener were ORA-12560 and ORA-12541.