Remove \ Disable Office Genuine Advantage Notifications

Run Registry Editor (RegEdit.exe).
Go to each and every of the following registry keys, and any other which contains OGAAddin.connect registry value sub-key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Word\Addins
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Excel\Addins
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Powerpoint\Addins
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Outlook\Addins

Delete the OGAAddin.connect registry value.

How to open ports in Internet Connection Firewall in Windows XP ?

To manually open a port in Internet Connection Firewall , follow these steps:

1. Click Start, and then click My Network Places.
2. Under Network Tasks, click View Network Connections. (Or, right-click My Network
Places on the desktop, and then click Properties.)
3. Right-click the connection that you use for the Internet, and then click Properties.
4. Click the Advanced tab, and then click Settings.Note If the Settings button is unavailable,
ICF is not enabled on this connection, and you do not have to open any ports (because
they are all already open).
5. Click Add to open a new port.
6. In the Description box, type a friendly name. For example, type File Sharing : Port 445.
7. In the Name or IP address of the computer hosting this service on your network box,
type 127.0.0.1. Note You can specify the IP address of an internal computer. But you
typically will use 127.0.0.1.
8. In the External port and Internal port boxes, type the port number. Generally, this
number is the same.
9. Click either TCP or UDP, and then click OK.
10. Repeat steps 1 through 9 for each port that you want to open.

Set Up Remote Desktop with Windows XP -mstsc

This article explain how to set up remote desktop on your pc at home .

After you'll follow all the instruction you will able to connect your pc from every place.

Try this article (mstsc) .

http://www.microsoft.com/windowsxp/using/networking/expert/northrup_03may16.mspx