Problems with documents opening on diff comps

Hello,

I am having problems while in MS Word (have written/edited/corrected many different documents) save the document onto a usb flash drive and open it on different computer to only find that the action is non existing. Yet, when I check it out on original computer station (pulling directly from the usb) the changes/creation is there.

I have a desktop running windows vista home basic and laptop running vista home premium.

Please help! Thanks..

Alichik