512mb

Hey guys I am not able to play CS:S w/ my router configured. I went to steampowered.com and check which ports need to be set up. I called my Router Provider (Belkin) and they walked me through opening up ports so I could play (Retrieved ports from steampowered.com). After rebooted router/cpu/ect. I tried to run steam... Again I get the exact message. Also I check steampowered.com for the list of routers that do not support steam period! But my belkin was not listed. If any 1 has had similar issues and has retrieved a(n) resolution please help!! NOTE: I have done my homework.. but there maybe something I am missing. Also When I put in ports to be open (e.G 7500-8000) I am not sure if I put them in right. I am at work right now, but I will upload a SS with a detailed picture! Thanks

512 MB

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-*-Acrylic Case
-*-GIGABYTE GA-965P-DS3 LGA
-*-Intel Core 2 Duo E6300 Conroe 1.86GHz
-*-32" Widescreen LCD Display
-*-G.SKILL 2GB (2 x 1GB) 240-Pin DDR2
-*-WD 160GB 7200 RPM 16MB Cache SATA 3.0Gb/s
-*-XFX GeForce 7900GS ( XT Edition )
-*-PLEXTOR Black 16X
-*-XCLIO GOODPOWER 500W ATX