Here is a simple method that can tweak the performance of Internet Explorer. Here it is:
1. Click Start - Run.
2. Type "regedit" and click OK.
3. In the left pane navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
4. In the right pane you should see the contents of Internet Settings.
5. Check Regedit's right-hand column for the following two lines (values): MaxConnectionsPerServer MaxConnectionsPer1_0Server
6. If these values are present, right-click on the first value (MaxConnectionsPerServer), select Modify from the drop-down menu, click Decimal, and set the Value data field to 6. Repeat this process for the second value (MaxConnectionsPer1_0Server).
7. If these lines (values) are not listed, right-click on the white region of Regedit's right-hand column, click New, and then click DWORD Value.
8. Enter MaxConnectionsPerServer for the name of the new DWORD Value and press Enter. The new value should now appear in Regedit's right-hand column.
9. Right-click the new value and click Modify.
10. As in step six, click Decimal and set the Value Data field to 6, then click OK.
11. Repeat steps seven through 10 using MaxConnectionsPer1_0Server as the new DWORD Value name instead of MaxConnectionsPerServer.
12. Close Regedit and test Internet Explorer.