Unable to see other network devices anymore except Xbox 360

#1
When I first installed Windows 7 64-bit build 7100, it immediately detected all my network devices/computers. Over the past few days it has ceased to quit detecting the computers on my network and my PS3, but works fine, with no issues what so ever with my XBOX 360. Here is the hardware I'm working with.

If needed I'm willing to generate any sort of reports, hijackthis, msinfo32, dxdiag, ect.


Router: WGR614 V8 Firmware: 1.1.24

Computer 1: - Can be seen all devices except Computer 2
Windows XP SP3 32-bit
Broadcom NetXtreme 57xx Gigabit Controller
AMD 3500+ 939
1GB Kingston Ram PC-3200
NVidia Verto MX420 64MB AGP 4x

Computer 2: - Can only see Xbox 360
Windows 7 64-bit build 7100
Intel Quad-core Q6600
Marvell 88E8056
2X 2GB Corsair w/ heatsink
NVidia 8500 GT 512 MB PCI-E 16x 1.0

Squeezebox Duet w/ Controller - Can only be seen by Computer 1

Squeezebox Boom - Can be seen by only computer 1

Xbox 360 - 20GB premium edition Opus - Works PERFECTLY fine and can be seen with by all PCs

PS3 80GB - Metal Gear 4 Edition - Can be seen by all PCs, except Windows 7
 


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