364825 Very Simple Windows Program

Basically there are 2 files: [login to view URL] contains: sometexthere1sometexthereetcetc [login to view URL] contains anothertexthere1anothertexthere So these 2 files are the initial "pair". I need a program that will make more "pair" files such as: [login to view URL] contains: sometexthere2sometexthereetcetc [login to view URL] contains anothertexthere2anothertexthere [login to view URL] contains: sometexthere2sometexthereetcetc [login to view URL] contains anothertexthere2anothertexthere And so on, up to the number of files N that I wanna create. Basically the number in the text can be a parameter which will be changed. Only that parameter changes in every file. That's it. You should be able to do this in 1 day max (more likely in 1 hour).