show all products on frontpage devided in categories HELP SOS HELP!

[datamedic]

Hello

i have searched the forums a lot and didnt found any answer

i want my virtuemart to show on joomla home page all the products on my site divided in categories ,
exactly like this site -? http://www.flos.gr/index.php?pid=8&lang=el

Please reply to this one as it is really important


Thank you in advance