Was just reading an article on The Next Silicon Valley website that details some of the talks that Craig Barrett (formerly of Intel) was giving in Ireland.   He has some strong opinions on how a real technology sector can grow.  I think he has a lot of good things to say, with the biggest being that Foreign Direct Investment is probably not the best way to grow a regional technology hub.  Growing from within is longer, but really the only way for a sustainable technology park.  Worth a read.