Buy the largest flash available. You can add programs via the Wyse management software or logging in as admin on the unit and doing add remove programs. You are very limited to what you can add due to limitations of Flash size of the drive. We have been using XP embedded machines from Netx for a few years. If you have a lot of extra plugins and software you want a flash drive like those on the wyse is not the way to go. You need a system with a hard disk. That is not to say that you couldn't put XPe on a device with a hard disk. Jim Kenzig http://thin.net Jeff Stockard <jstockard@xxxxxxxxxxxxxxxxxxxxx> wrote: My boss is evaluating a new Wyse thin client with Windows XP embedded. The Microsoft, Wyse and Citrix sites state that software can be added to these machines. Neither my boss or I can find out how to install additional software on these devices. We have not been able to find out what software can be added either. The Microsoft site does have a handy link with questions that nobody wants to know the answers to. Yesterday, I did a search on their site and every thing I tried returned 0 results. I kept eliminating words from the exact error message and received 0 results each time. Finally I was down to the word Windows. It had one result, which was a white paper on deploying something on Windows. <off soap box> Jeff Jesus Loves You