OMG I SWEAR IT WASN'T THERE A WEEK AGO. *ahem*
I just found the program files, under Local Disk. I looked for that. I promise. It wasn't there. My computer is playing pranks on me. :p
Following your instructions, I replaced the original file with the new one. I um, didn't save the original one first though. Fingers crossed it's all good, or whatever, I'll just un-install and try again. In total I've played like less than a sim-week in IP and nothing has happened. I don't even like my sim all that much. B)
Thanks for your help. I appreciate it. <3