My Passport 1TB - 2 computers access right

I have newly bought a my passport 1tb. I installed the smartware on my priviate computer, copied files from an old harddrive. Everything was fine till i also need to access from my company computer which i didn’t use smartware but manually copypast files. After that I found there are almost 60% of the folders are not accissible from both computers, and it always ask for access priviledge. 

I haven’t set up the hard drive password, and have tried many ways trying to fix it but no result. can you please help? i need to know how to use this harddrive in 2 computers asap. 

thanks!

The drive can be use with as many computers as you want

whatever privileges the folders had to begin with will remain

take ownership of the file

check this info

http://www.winmatrix.com/forums/index.php?/topic/13157-easy-way-to-take-ownership-of-system-files-in-vista-windows-7/