Okay, so I got CS3 and entered the serial number and everything, but I didn't bother with the complete installation because I got frustrated trying to learn everything. (I'm not exactly a technologically advanced human being). Because of this, I set it down until LONG after the trial period had expired and still, it asks me for my Photoshop Elements serial number. ...I don't have Photoshop Elements. Nor have I EVER had Photoshop Elements. Yet, it says that "the serial number [I] have entered indicates that you are trying to upgrade your software..." And it won't allow me to just move on and say, "Um, no. I have no other Photoshop serial numbers. Please, let me use my over-priced software. KTHXBAI."
In conclusion, I don't know what to do. I'm not going to buy Photoshop Elements unless that is the only option. I've spent enough money on this as it is. PLEASE, help me if you can! I WILL, in fact, love you forever. <3