You can donate to the appeal by the Disasters Emergency Committee ( http://www.dec.org.uk/ )
through this link : http://www.dec.org.uk/donate_now
The terrible situation in Gaza is described at :
http://www.dec.org.uk/item/200
and at Oxfam's Gaza blog :
http://www.oxfam.org.uk/applications/blogs/pressoffice/?tag=gazablog
Online photographic collections of living conditions can be viewed at :
http://www.oxfam.org.uk/oxfam_in_action/emergencies/gaza_gallery.html
and on the DEC collection on Flickr :
http://www.flickr.com/photos/disastersemergencycommittee/sets/72157612866135964/