i can't connect to the itunes store, have followed all the support advice from the website

I can't connect to the itunes store, my diagnostic has produced teh following result., I have followed the general advcie on the website but I am not getting anywhere, can anyone help? Thanks DonalP Network Connectivity Tests **** Network Adapter Information Adapter Name: {052FB98B-25CD-438E-A593-AB018BE7513F} Description: Bluetooth Device (Personal Area Network) IP Address: 0.0.0.0 Subnet Mask: 0.0.0.0 Default Gateway: 0.0.0.0 DHCP Enabled: Yes DHCP Server: Lease Obtained: Thu Jan 01 00:00:00 1970 Lease Expires: Thu Jan 01 00:00:00 1970 DNS Servers: Adapter Name: {183C39AE-E8BB-4CCE-A382-9A7AF63B038C} Description: Intel(R) WiFi Link 5100 AGN IP Address: 192.168.0.100 Subnet Mask: 255.255.255.0 Default Gateway: 192.168.0.1 DHCP Enabled: Yes DHCP Server: 192.168.0.1 Lease Obtained: Wed Apr 04 17:45:08 2012 Lease Expires: Wed Apr 11 17:45:08 2012 DNS Servers: 192.168.0.1 Adapter Name: {4BE3719A-9278-4428-ACED-DFE7594DB38B} Description: Marvell Yukon 88E8055 PCI-E Gigabit Ethernet Controller IP Address: 0.0.0.0 Subnet Mask: 0.0.0.0 Default Gateway: 0.0.0.0 DHCP Enabled: Yes DHCP Server: Lease Obtained: Thu Jan 01 00:00:00 1970 Lease Expires: Thu Jan 01 00:00:00 1970 DNS Servers: Active Connection: LAN Connection Connected: Yes Online: Yes Using Modem: No Using LAN: Yes Using Proxy: No Firewall Information Windows Firewall is off. Connection attempt to Apple web site was unsuccessful. The network connection timed out. Basic connection to the store failed. An unknown error occurred (-128). Connection attempt to Gracenote server was successful. The network connection timed out. Last successful iTunes Store access was 2012-03-08 11:34:36.