GREAT ep and heres the Spoilers
Ok first of all they communicate in a VR world the Aurora is a Sciences vessel that was doing recon for the Ancients they found a weakness in Wraith Tech. Only the vessel was two slow to get back very fast so they had to take the deady to see what was going on they find about 336 Ancients in Pods. So shep goes in to talk to them tell them what’s going on. Only they don't believe him because a Wraith has entered the pod of the First Officer who is of coures very HOT. Now shep spends most of his time trying to get the info on the Wraith Tech only to find out that the Wraith has deleted it from the computers. Now McKay finds away to take the Wraith out of the pod and then shep convinces them of the truth. Oh and did I mention while all this is happening 2 wraith Cruisers on there way. So the wraith is out of the VR and shep has to leave to but the Caption of the Aurora gives him the codes for the self destruct and it destroys the Wraith Cruisers. now you might be wondering why would the Wraith stay in the VR when the info on there weakness is gone well its because he was trying to modify the Ancient hyper drive so that he could modify the Wraith Hyper drive to get to BINGO EARTH
Ok thats what i have to say anyone else from the Great White North have anyhting to add