Cannot connect to iTunes store - error messages in Win XP event log

Question

I've been reading the posts and trying to connect to the iTunes store unsuccessfully for at least a week since installing the latest iTunes 9 update.
I've tried every suggestion I have found without success including uninstalling and reinstalling iTunes. I also used MSCONFIG to do a selective startup without services and then started iTunes, no luck with that.
I just went to Administrative Tools->Event View to look for clues.
Every day since March 31, 2010 there are multiple error messages for Bonjour Service. Probably one error for every time I tried to go to the iTunes store.
All of the Bonjour error messages are the same.
The error message follows:
ERROR: read_msg errno 10054 (An exsisting connection was forcibly closed by the remote host)
I can see my store account information, but when I click DONE the process hangs.
When I click on iTunes Store, the status bar goes about half way and hangs. No error messages.
When I run iTunes network connectivity tests the results show a "Secure link to iTunes Store verified"
Any help would be appreciated.

Answer 1

Update to my original post
Still cannot see the iTunes store. Here is a list of what I have tried so far in addition to what I mentioned in the original post:
Changed parental controls to only allow access to iTunes U - cannot see iTunes U
Changed parental controls back to allow all access - cannot see the store
Updated my network driver - no change
Investigated the Error code 10054 on the internet for a solution.
Found this posting:
http://www.sqlservermart.com/resources/SynAttackProtect.aspx
Changed the registry as they recommended to include:
HKEYLOCALMACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\SycAttackProtect{DWOR D} = 0
Rebooted and no change.
iTunes network diagnositcs indicates I am able to connect to the store, but the status bar still hangs up about 1/2 way into the attempt to connect.
iTunes Network diagnostic results shown below:
Microsoft Windows XP Home Edition Service Pack 3 (Build 2600)
Dell Computer Corporation DIM4500
iTunes 9.1.0.79
QuickTime 7.6.6
FairPlay 1.7.16
Apple Application Support 1.2.1
iPod Updater Library 9.0d11
CD Driver 2.2.0.1
CD Driver DLL 2.1.1.1
Apple Mobile Device 3.0.0.102
Apple Mobile Device Driver 1.46.0.0
Bonjour 2.0.0.34 (214.3)
iTunes Serial Number 64B00F8F5E0A51EF
Current user is an administrator.
The current local date and time is 2010-04-10 13:39:14.
iTunes is not running in safe mode.
Video Display Information
ATI Technologies Inc. RAGE 128 PRO Ultra GL AGP
** External Plug-ins Information **
No external plug-ins installed.
iPodService 9.1.0.79 is currently running.
iTunesHelper 9.1.0.79 is currently running.
Apple Mobile Device service 3.0.0.0 is currently running.
** Network Connectivity Tests **
Network Adapter Information
Adapter Name: {4CDE1A2C-0018-45E9-BA18-009425BD110D}
Description: CNet PRO200WL PCI Fast Ethernet Adapter - Packet Scheduler Miniport
IP Address: 192.168.1.101
Subnet Mask: 255.255.255.0
Default Gateway: 192.168.1.1
DHCP Enabled: Yes
DHCP Server: 192.168.1.1
Lease Obtained: Sat Apr 10 12:16:18 2010
Lease Expires: Sun Apr 11 12:16:18 2010
DNS Servers: 72.240.13.35
72.240.13.35
72.240.13.5
72.240.13.6
Active Connection: LAN Connection
Connected: Yes
Online: Yes
Using Modem: No
Using LAN: Yes
Using Proxy: No
SSL 3.0 Support: Enabled
TLS 1.0 Support: Enabled
Firewall Information
Windows Firewall is on.
iTunes is enabled in Windows Firewall.
Connection attempt to Apple web site was successful.
Connection attempt to iTunes Store was successful.
Secure connection attempt to iTunes Store was successful.
Secure connection attempt to iPhone activation server was successful.
Last successful store access was 2010-04-10 12:21:51.