Big fix requires attention

How to fix bigfix virus This problem can be solved manually by deleting all registry keys and files connected with this software, removing it from starup list and unregistering all corresponding DLLs. Additionally missing DLL's should be restored from distribution in case they are corrupted by bigfix. To fix this threat, you should:

1. Kill the following processes in task manager and delete the appropriate files from the programs folder:
1.Bigfix
2.BIGFIX.EXE
3.Alexa
4.Alexa.exe

Run a good antivirus program and remove what is found.

From E machines web site:

http://www.emachines.com/support/service.html
BigFix® Proactive Technical Support Question:
Why is BigFix no longer supported on my eMachines computer as of April 30, 2009?

Answer:
For many years BigFix and eMachines have partnered to provide BigFix technology on computers to help provide fixlets for eMachines. Unfortunately, BigFix and eMachines have not chosen to renew their business partnership and therefore BigFix will no longer be provided on eMachines computers after April 30, 2009. Additionally, there will be no more updates for BigFix on existing eMachines computers after April 30, 2009 and therefore eMachines is recommending that you uninstall BigFix from your computers. This can be done via the fixlet you see in BigFix or you can use Add/Remove Programs in Windows XP or Uninstall or change a program in Windows Vista.