ToriaTunndra

I am not sure if mine is a trial. My original trial expired, then i clicked convert, and all of a sudden at the top it says non commercial use (trial) and it still works. I didn;t have to enter another serial key and it never asked me if was purchased or anything like that. Is this still a trial, or am i somehow paying for it? Also; is there another way to see if it is still a trial? like going into a program (in this case, power point,) clicking powerpoint options and going into resources, where will it say it is a trial? Please help, and thank you!!!
I just want to make sure this is going to get billed or something. Im not using a torrent thing either. I learnt this thing though where you change the file from always used to never used. i tried that but it didnt last and i really needed it for school. In which case, i decided to try to redownload the trial, and change it back to never used. that didnt work. when i clicked convert it went all wierd and stuff, and now says "non commercial use (trial) at the top. I am still able to use it though. Im just trying to make sure i won't get billed or anything for this.