So,if I render my animation at 768x576(pal) uncompressed and I output through Premier print to video at 25f.p.s through the tv out on my video card (composite or svhs?)and record to say,Betamax tape--do I then have a broadcast quality tape?-or are there other considerations?Advice please.

It won't be broadcast quality unless it is recorded on a broadcast quality medium like Betacam (the professional version of Betamax. Tape size is the same but it runs 4X faster over the heads). If you output your render as a Quicktime Animation (uncompressed) and burn it on a CD, you can take it to any Editor and they can use it on a Media100 or Avid the same as broadcast video. The only weak link in your chain is the home video Betamax, everything before that is broadcast quality. If you have a DV recorder or camcorder, you'd be better off recording your animation on it because it is digital so there is no loss in quality. It's a cheaper alternative to a $15,000 professional Beta deck. I'm in the USA, so I render at 720x486 (NTSC), but I use 30fps instead of 24fps. It increases my render time, but I like the clarity of a 30fps transfer to video. The extra 6fps adds a lot of extra information per second and that increases the production value. I render to Quicktime as uncompressed Animation and then burn that .mov file onto a CD and send it to the Editor via FedEx. He imports my QT mov and edits it into whatever the project is. When it is done the whole thing gets recorded onto NTSC BetaSP or D2, and then I make VHS copies from the master to send out or view at home.