Possible Duplicate:
Why can’t my device see an ad-hoc WiFi network?
I created a wifi hotspot in my Windows 7 laptop (open ad-hoc) but my Android 2.3 tablet is not detecting it. My tablet is detecting other wifi networks but not my laptop's hotspot, how can I fix this?
As described in this answer most versions of Android don't support Ad-Hoc WiFi networks, however if you try using an application such as Connectify then this should allow you to use your laptop's internet connection on your phone. If you need them then instructions on how to set it up can be found here.
