[xwiki-users] Centrally aligning tables?? and creating directory tree

Hi there, finally after managing to get XWiki installed on my FreeBSD system I am trying to create a tree where information will go under according to the specific type and heading: Basically what I'm after it this: Main -> Howto's -> FreeBSD Solaris OpenSolaris Linux So far I managed to get the desired affect by: creating a new space called Howto's and then linking in the rest of the items as pages spanning downwards from the main root in the tree.... is this correct or can I created spaces within spaces?? Also I am wondering how to centrally align a table? I have attempted the following syntax as I couldn't find any graphic buttons on the editor to perform the task: (% style="table-align=center" %) |[[[[image:freebsdlogo2.png||alt="freebsdlogo.png" style="display: block; margin-left: auto; margin-right: auto;" width="400"]]>>FreeBSD]] |[[[[image:logomed2.jpg||alt="logomed.jpg" style="display: block; margin-left: auto; margin-right: auto;" width="400"]]>>Linux]] |[[[[image:solarislogo2.png||alt="solarislogo.png" height="208" style="display: block; margin-left: auto; margin-right: auto;" width="400"]]>>Solaris]]|[[[[image:OpenSolarisLogo2.gif||alt="OpenSolarisLogo.gif" style="display: block; margin-left: auto; margin-right: auto;" width="400"]]>>OpenSolaris]] This however doesn't work as the table is still left aligned??? Any advise is much appreciated as I am struggling to find much documentation on this wiki at all and what is around seems to be really lean. If I manage to get as far as creating what I want with a custom look then I will definitely create a manual on it as that's my intention for the WiKi in the first place!! Many thanks, Kaya