Depending on what you have for systems available, I would recommend as follows :
1) For Install on a VIrtual Maschine:
Use linux, since it gets along with less ressources than a windows install in the vm AND mysql is usually installed automatically.
For a Open Suse Linux installation, do the following:
a create vm with 768 MB ram, 10 GB Harddrive, split in 2gb chungs, fixed size
b install standard Opensuse, ensure following packages are included :
** Gnome or KDE,
** mysql
** OpenOffice 2.x (not 3.0, if possible !)
** Java 1.5.0_15 (not 1.6 !)
** freetype (all available packages) (optional, if you want to have flash-preview in share application)
** freetype2 (all available packages) (optional, if you want to have flash-preview in share application)
** jpeg 6b (optional, if you want to have flash-preview in share application)
** giflib (all available packages) (optional, if you want to have flash-preview in share application)
c install "Alfresco Full Linux Setup" into /opt/Alfresco
d check Paths to java and alfresco in /opt/Alfresco/alfresco.sh, apply_amps.sh
e change DBMS settings for mysql (/opt/Alfresco/tomcat/shared/classes/alfresco/extensions/custom-repository.properties & custom-hibernate-something)
f call /opt/Alfresco/apply_amps.sh
g call /opt/Alfresco/alf_start.sh
done
2) On an existing windows mashine
The Installer under windows is pretty exhaustive.
for a short tryout just install the fullinstall for Windows
for a longer tryout, install mysql first and use mysql as DBMS
Why choose Windows ? The installation process is easier for a quick testinstall. Just start the exe and be done with it.
Why choose Linux on a VM ? Configuration Management and Backup/restore is much easier. The VM can be easylie frozen (snapshot), copied, played around with in varying settings / tests / whatever and backuped in the whole. So you can go back to earlier states of your system by just starting an older version of the VM. And if you are tired of having it on your computer, just move it to some other location, server or other.