Sorry did not realise the TP Tablet is an Android device - On my old HTC Desire Android there is an app called "WiFi Hotspot", I have not played around with it as yet - but according to the on-screen info > Portable Wi-Fi Hotspot can share this phone's 3G internet connection with your PC via WiFi. After the Portable Wi-Fi Hotspot is started on this phone, your PC can connect to it and then start using the internet
This app does seem to be on most
HTC Android devices and would seem to allow cross platform internet connection via WiFi from a 3G service.
Can confirm this app works really well - have been able to setup a local WiFi hotspot (54Mbps) and share the 3G's internet connection with a couple of PC's & BB's as well as HTC mobiles - both standalone & simultaneously -