External Hard Drive on wireless networkin???

Hi all I am wondering if it is possible for me to mount my external hard drive on to my network for all computers on it to access files and save files to it???
I use Mac and windows programs just wondering if this is at all possible

Any help greatly appreciated

 

is it plugged in 2 a computer???
r u already on a network????

 

Is plugged into my xbox which is on my network but not direct to a computer on the network. I can plug it in to 1 if it makes a difference but

 

try plugging it in to a pc then making the folders shared
-p.s-make sure that computer is on the network

 

Ok will do that the only problem is I use mac not PC but think the principal is the same anyways

 

cant realy help there im not that good with a mac
i can try tho