Trouble connecting two home PCs through wireless router.

I currently have cable internet. My internet is run directly into my wireless G router. I have ethernet running from wireless router to my desktop pc. My laptop is connected wirelessly. I’ve got both workstations configured in the same workgroup and I have file sharing turned on. How come I can’t see what’s on the other computer when I browse in my network connections. I actually see the other pc in the workgroup but when I click it to explore I just get an hour glass and eventually have to use task manager to shut it down because it doesn’t respond. Any help?