The LX-90 has a dedicated bunch of enthusiasts at YahooGroups. You can sign up below.
Sites with LX-90 content
U.K. astronomical suppliers
David Hinds Ltd (the main Celestron dealer in the UK)
U.S suppliers who ship to the U.K.Scopestuff (Who do a nice range of rails/mounting brackets/weights for the LX-90
List of sites with astronomical sketches