Hi maddad and welcome to the 2-spyware forums.
There are a number of products that will automatically remove viruses as well as spyware and adware.Removing manually will take a long time and your kids computer will be easily reinfected.List of securities that are recommended below:
[Antivirus]
Commercial products(you need to renew its license every year):
Symantec Antivirus/Norton
NOD32 Antivirus
Kaspersky
Trend Micro
BitDefender (not the free v8 version)
Home products(free to use):
AVG antivirus
BitDefender8
PC tools antivirus
[Antispyware]
Commercial products and free products are listedi here:
(
http://www.2-spyware.com/anti-spyware)
Here are some ways to prevent getting infected when surfing online:
1)Install McAfee site advisor.Its free and its job is to mark which sites are bad or good.
2)Install a popup blocker.Normally,popup or advertisments appear suddenly when surfing and this will lead to curiosity to many users by clicking on the 'image' which lead to mostly bad sites.
3)If you notice that your PC has decreased in peformance or receiving popups most of the tmei,it is possible that it been infected by spyware.Various virus will do a destructable payload such as stealing passwords from a credit card,system instability and installing more viruses.Make sure you run an antivirus or antispyware scans at least once a week to unsure safety.