Trouble using ext HD on mulitple PC's

I copied this post to show that I am having the very same problems and have done all that is suggested. Does anyone elsse have anything that they can help me with. Thank you all for your help.

http://community.wdc.com/t5/External-Drives-for-PC/Some-files-not-accessable-when-connected-to-a-different-computer/m-p/380107/highlight/true#M10952

PS: I have used almost exclusivly WD for all my HD needs. I am not an expert which means I know just enough to get myself into trouble LOL.

What is your problem exactly? Can you see the files but not use them or you cannot see them at all?