That's what I thought. ^^
In traditional RC theology, Hell is what happens to the unsaved after bodily death, and once there you have no escape. The only thing that will change is that, before the Last Judgment, only your soul will be tormented, while after the Judgment and the resurrection of the body, both body and soul will be tormented for eternity. Purgatory, on the other hand, is where your soul goes if it is saved but still has some temporal penalties to "pay off"; everyone in Purgatory will end up in Heaven after the Last Judgment.
In Orthodox theology, from what I understand, the term Hell is a little misleading, because there are actually two things that we can call Hades and Gehenna. Hades is where your soul goes after death if you have not repented OR if you have repented, but haven't brought forth fruits of repentance. There is no Purgatory. However, the souls in Hades that have repented may still be saved through the prayers of the Church (and possibly through God's direct intervention, but the Church is silent on the details). Of course, this means you have to die in the Church to take advantage of the Church's prayers.
At the Last Judgment, and the bodily resurrection, everyone will be judged according to whether they followed the dictates of their conscience. Not everyone in Hades will necessarily end up in Gehenna, but those who are sent to Gehenna will never escape after that.
One priest, now Orthodox but formerly RC, explained to me that the difference between the RC idea of Purgatory, and the Orthodox teaching that souls in Hades may still be saved through the Church's prayers, is that the Orthodox believe there is no repentance in Hades. This means a soul in Hades can't save itself by repenting, or by "paying off" temporal debts, but only the Church can help it at that point. In other words, it is not the suffering in Hades that saves a repentant soul, but simply the fact that the soul repented before death AND died within the bosom of the Church.
The moral of the whole story, as I see it, is that you really have to follow your own conscience above all else. This mainly manifests itself in love of the truth. One part of that is seeking the truth about God, which should lead you to the True Church, where you can avail yourself of Her prayers (both on Earth and in Heaven). The other part is seeking the truth about yourself, which means constantly examining your conscience and confessing all your sins, so that nothing will be held against you either after death or at the Last Day.