For a good overview of Shetland and a portal to a wealth of information: VisitShetland is the essential site to visit.
Or try:
Undiscovered Scotland with lots of photos.
A lovely school web site on Fetlar, one of Shetland's many islands is:
Fetlar Primary School with a virtual tour of the island and weather eye.
The weather features large in life on Shetland, so check out:
Northern Isles Weather Service which includes Orkney, Caithness & Sutherland too
A retreat house in Sutherland near Tongue called Fir Chlis
For a selection of beautiful photographs of the Caithness and Sutherland area do visit the web site of award-winning photographer Martina Cross here.
Web site of the Iona Community in the Inner Hebrides on the island of Iona near Mull
If you are interested in camping or caravanning in Scotland then the Scottish Camping Site is a must see: Scottish Camping
Two ME sites
Association of Young People with ME - AYME - especially for kids & parents
The ME Association for adults
More links added 22nd September 2008, more to follow!