I've suffered with too much sitting at my computer for many years. A while back I wrote an upper limb disorder training CD with some physiotherapists and have just converted all of the content into a free website. Lots of advice and exercise videos etc (no Lycra I’m afraid). It really is worth knowing this stuff so anyone who’s not familiar with the issues would be wise to take a look. See e4training.com/workwell/ I’ve not put a link as it’s my site but because of the topic I hope this is not considered spam.