Use IP Sniffer and it can  work on all Windows versions using either the new raw socket implementation of Windows2000 (driverless) or WinPcap (needs to be installed) or a NDIS protocol (needs to be installed , no reboot).
The sniffer has basic features like filter, decode, replay, parse…

This program will show your external IP within 3 secs !!!

Here are some key features of “Show My IP”:

· Simple, Userfriendly.
· Fastest way to know your external IP.
· Right Click IP copy.

Requirements:

· Internet Connection of atleast 64kbps bandwidth.
· Microsoft.NET Framework 2.0 or above.
· 256MB RAM
· 2MB Free HDD Space.

With MySpeed you will see measures broadband download and upload connection speeds by timing actual data transfers between an Internet server and end-user computer.

MySpeed PC Lite is available as a downloadable utility to run from your PC or a Java applet that can be hosted on your web page to enable accurate speed test services for your customers and end-users. All MySpeed speed tests measure the bandwidth consistency of an Internet connection and report the connection quality. Consistency of download capacity is a critical measure for bandwidth-intensive applications such as VoIP and multimedia.