Network problems between OSX Lion and Windows 7
 

So I decided to bring my problem to this board since I wasn't sure who to direct it to (PC or Mac) but I am having serious problems networking the two.

Currently when I try to connect to my Mac via my PC I am getting an error message in the windows security box, "Logon failure: unknown user name or bad password." I figured this has something to do with my Mac otherwise I shouldn't be getting this error. I need help to get rid of this.

Next thing I wanted to know is if it is possible to share an external hard drive connected to OSX Lion with a PC running Windows 7 because I have had no luck with this as well.

-Rome-