1) Tax Bands for 2008 = Single:35400, Married:70800, Widowed:39400
If spouse not working then married allowance reduced by 26400. Anything in excess of these figures is taxed at the higher rate.
2) When you make your lump sum PRSA contribution, you'll get a PRSA1 certificate. Send it to your local Inspector of Taxes with your P60 and a note explaining that you want the contribution allowed against 2008.
3) Spooky missing question.
4) Sorry - I'm not sure.
5) Your employer cannot take back employer contributions to a PRSA, regardless of when you leave. (That only applies to Occupational Pension Schemes when the employee leaves within 2 years.) You can transfer funds between PRSAs without charge or you can leave your PRSA fund invested until you retire. Or you can make contributions to it yourself if you're self-employed or in non-pensionable employment. As a final option, if your future employer is willing, they can make contributions to either of your existing PRSAs.