Thanks for your comments - especially for avoiding the easy step of making this into an argument about the rights and wrongs of the Irish situation. All sides have committed what could be termed attrocities and all sides could be considered terrorists. I'm gonna shy away from getting into the state-sponsored terrorism arguments that can be drawn here.
You're basically admitting to supporting an admittedly terrorist organization in the PIRA. Yes, the official IRA have obeyed a ceasefire since 1997(?), but if you ask Bin Laden, I suspect he'll tell you that he's obeying a ceasefire. He's certainly not admitting to the Sept 11th attacks.
I think it's naive to suggest that you can support the PIRA and not be supporting terrorism. There has been no movement from the PIRA as far as decommissioning their weapons, so I find that I must question their commitment to a peaceful settlement.
Incidentally, Nelson Mandella was imprisoned for being a terrorist (without trial - bad!) - a fact which I believe he admitted. The ANC was a terrorist organization at the time, so maybe the US should bomb South Africa?