problem with fonts

Hello everybody

In first, a picture :

i15941_criture.jpg

Yesterday, I've made a register cleaning with CCleaner, and now appears a problem with some missing fonts (I think but not sure). This problem affect as well menu option of outlook than menu option of CCleaner. And of course, I don't backup what CCleaner erase. So I've one question :

what fonts CCleaner use for his menu and research list ? normally, with that, I'll maybe able to restore the originally fonts for my outlook and CCleaner

thanks for your answers