All you have to do is to ask them to make sure that the default language is English. I know about this and it is a problem with windows [in addition to millions of problems] and sometimes, even if you do this you would still get the annoying language interface showing you that the default is Arabic. Now if you want to switch between the languages you can also open for example 'MS Word' and then click down there on the desired language to use it.

Sorry guys, but I was really serious about it :).