As stated by other responders, your friend has a trojan. The trojan and any related worms have to be removed from her system.

1. Remove any junkware such as Kazaa and delete all files in the Windows\Temp.

3. Next she will want to download Ad-Ware 6.0 all spyware.

2. Download the lastest version of TDS Professional anti-trojan ware. There is a 30 days trial version available that does a good job of sniffing trojans including mutexs and mutlithreads. The program eats up a lot a resources while it checks, but it is probably the best anti-trojan available. Be sure to get the plug-ins as well. Run a full scan of the system including ports. When the program is finished checking, delete all trojans, reboot and run the scan again verifying all ports.

4. Reboot once again and run scan with TDS. Her system should show clean.

I'm assuming your friend has anit-virus software installed? If not she needs to get some. And she should register her download of TDS set it for autoscan. TDS and most anti-virus software like Norton and Netshield can run concurrently. Ad-Ware doesn't need to be registered but she should check their website regularly for the latest version and updates. I recommend the anti-trojan software because once she has been hacked, she's likely to be hacked again.