Where can I change the currency when I use an Excel Request Table?

Hello,

as a quite new user to Datastream I have the following question:

I would like to compare data (e.g. pretax income, income taxes, total assets, ...) from companies that are located in different countries using the EXCEL Request Table. Therefore I need the data in one common currency (US-Dollar or Euro). Is it possible to change the currency so that all the data have the same? If yes, how? If not, is there any other way to deal with this problem?

Thank you in advance!