How to install Unity(30days) whithout internet

my another computer can't use internet how can I install unity(30days)

have a look at this link :-)

http://unity3d.com/support/documentation/Manual/Activation.html

on the computer that you want to use unity, open unity and then go to help menu and click on Enter Serial number. then choose manual activation. this page might apear at startup if you did not activated unity before. then choose the Save license button and get the XML file and send this file by email to support@unity3d.com and then they'll give you another file. again open unity and choose manual activation and this time choose read license file and get the new file to unity and you are good to go

thanks Ashkan!!!

on my computer, I used the original XML file from the manual install to install instead of having to email it to Unity.

just got rid of the XML extension and kept the .ilf. Read License was then able to see it and activate my pro license.