Sorry for the muck in that last comment. I can't edit comments on blogware, which is a bummer, otherwise I'd fix it. OK, so you're nearly there. u and i are the pretty much the same in the south - an eee sound. u is not a y in the north, it's a sound that's impossible to spell, so you can pretty much ignore it. Just use the southern 'eeee' pronunciation w is an ooo to rhyme with southern English book or look or took, not moon or soon. y is uh, or schwah, in all positions except final, when it is eee (not a short english i as in sit, but an ee as in meet), hence you would say 'uhssbuhtee' for 'ysbyty'. Of course, describing the sounds of one language in terms of the sounds of another language is all a bit fuzzy because if you have an accent different to mine, (which is a southern English one) then you are going to have different points of reference. Your best bet is to listen to some Welsh spoken by real live Welsh speakers, and as it happens, there's some on CMC - some of the short stories also have audio. Maybe I should blog them with the audio as podcasts?