Try doing a Winsock fix and see if it helps:

STEP 1:
First obtain a fresh WINSOCK2 key using regedit...
1. Run REGEDIT
2. Browse to and highlight the key HKEY_LOCAL_MACHINE
3. Click FILE -> LOAD HIVE
4. Browse to the folder WINDOWS\REPAIR
5. Select the file "SYSTEM" and click OPEN
6. In the LOAD HIVE window, for KEY NAME type "123TEST" (without the quotes)
7. Browse to and highlight the following registry key:
HKEY_LOCAL_MACHINE\123TEST\ControlSet001\Services\Winsock2
8. Click on FILE -> EXPORT...
9. Name the exported key WINSOCKFIX and save it to the Desktop
10. Close REGEDIT

STEP 2:
This new registry patch file must be modified somewhat before we import it into the registry.
1. Right click the file WINSOCKFIX on the Desktop
2. Select EDIT
3. In NOTEPAD, click on EDIT -> REPLACE...
4. In the REPLACE window, enter the following without the quotes exactly as shown (this is CASE SENSITIVE)
Find what: "123TEST\ControlSet001"
Replace with: "SYSTEM\CurrentControlSet"
5. Click REPLACE ALL.
6. Once NOTEPAD has completed the Replace operation, close the REPLACE window.
7. Click FILE -> SAVE
8. Close NOTEPAD

STEP 3:
To import the fresh WINSOCK2 key into the system's registry, double-click on the WINSOCKFIX.REG file on the desktop, and answer YES when prompted to merge the key into the Registry. Then restart Windows XP.

Let us know if this helps... :)