Where can I find a CoopVoce SIM card in old Rome?

[DaveTO]

Like the title says, I will be in Rome later this year and while I know I can get a Coopvoce in Coop stores I won't be near any.

Are there are any places in the tourist part of Rome or in Fiumicino?

Grazie

[Effendi]

Here you can find all COOP store:
e-coop :: Store Locator (http://www.e-coop.it/StoreLocator/)
It seems there are none in the very centre of Rome, btw.