Google is your friend. This question has been asked and answered countless times, and there are probably hundreds of websites out there detailing exactly how to perform this task. So rather than repeat what has already been done, I'll tell you to hit Google (or your search engine of choice) to find the answer yourself.
And for the future, probably at least 9 out of every 10 problems you have will have been encountered by someone else previously. Odds are at least one of them put up a web page about it.
I have a gateway desktop running win 2000 pro spk 4 and a Dell laptop running win xp pro spk2, i have a wireless router that allow my desktop thru a wired to conect to the internet and the laptop also connect wireless, but i want to be able to access the files and folders from each other, what do i need to do in order to browse each other ? i tried to share both hds and also created in both of them same workgroup name but when i browse from one each i don't see the other one and viceversa.
Thanks for your help in advance