File transfer from PC to Mac issue--"volume failed to mount"

So I just got a new MB, and am attempting to transfer files via an ethernet cable. Mostly iTunes and documents. I spent most of the afternoon trying to connect it w/basically no success. It connected once, and I started to transfer my iTunes, and when I came back, it was disconnected. I have no clue what I did to get it to connect that time, but every other time I try I get "a volume failed to mount" message.

I might be putting in the wrong sharename. I type the name of my dell (running vista). IP address is right.

Thanks for the help. Its greatly appreciated.

I came across a thread from awhile ago that might help...I'm trying it now...

I think I got it....

To be perfectly honest...I have no idea what I did to get it to work. I was just messing with stuff for quite a while. I'm about 95% sure that it was something with my other computer. I didn't really change anything on the mac. Sorry...