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If it's not made portable you can always go to PortableApps.com and make a request.

http://portableapps.com/

In the past I used VMware ThinApp which was easy to use to make portable apps, all though it's not free.

Here's some Google info on making portable apps:

http://www.google.com/#hl=en&q=make+por ... 939af06a5a

This has been done.

http://portableapps.com/apps/internet/q ... t_portable