OK, so when you say "where I used to get normal fonts" you meant on a different computer with Windows XP. OK that wasn't clear to me.
Windows 7 can be installed in many languages so I guess my question would be did you buy this from the internet or a reputable dealer? It could also be infected with a virus.
Not knowing where it came from I guess my first reaction would be to suggest you copy down the product key and then download and reinstall W7 Pro SP1 in English. You can find out the product key with some free software called SIW, links to which can be found in our
Freeware DB. As for W7 SP1 Pro, you can find links
HERE. I would also warn you that pirated product keys can go for several months before Microsoft shuts them down so if there is any concern about your seller then do not be surprised if after some MS update you get a "not genuine" warning in the bottom right of the screen.
Now if this was a reputable dealer then I would suspect it is still under warranty and you would be best to contact them about the issue before any major undertaking such as a complete reinstall.
Also note any free or trial software that was on the computer would not be included in the true Microsoft ISO so you will need program disks or have to download any programs you want restored after a fresh install.
Another thought, have you hooked up a printer and if so what make/model?