are my o2 sensors bad?

[n00b on demand]

So I have developed a little problem within the past week or so. I told you all about the check engine light that occured during that blizzard we had while i drove home in the deep snow. Well that light went away after about 5 seconds and then came back and went away again in the same time approximatley. Yesterday while coming home on the highway the light came on again and then went away when i made a sharp turn and didnt come back the rest of the day. Tonight it came on again on my way home from school so I pulled in the driveway and shut it down...then restarted it and no light. I cant check for codes because its too dark...plus i have to read the instructions . One other thing I noticed is my idle....it is kinda sorta not as smooth as it should be. If you really really pay attention you can notice it a tiny bit rough....are those because of the o2 sensors or because of my bosche platinum 4 spark plugs? I have heard that those with the plugs have experienced a tiny bit of a rough idle. Well anyway hopefully its nothing major as the car drives perfectley fine.

Gas mileage has also been normal for me...the same ive gotten for 2 years now. So we got one CE light on february 11th....then it came back yesterday and tonight.

[n00b on demand]

ahemmm this thing on?