Sry if i posted the wrg section .
I would like to ask , how to i unblock
PROCESS : IEXPLORER.EXE
I would appreciate if someone could tell me the solution .
Thanks 
iexplorer.exe is a process belonging to the AdClicker advertising program. This process monitors your browsing habits and distributes the data back to the author's servers for analysis. This also prompts advertising popups. This process is a security risk and should be removed from your system.
avast! is blocking it because it is harmful to your system.
removed
Can you say what is the infected file name, where was it found (C:\windows\system32\infected-file-name.xxx)?
What avast! version and virus database are you using? (see About dialog of avast!)
Welcome to the forums, Meeptee. 
Like the others, I am wondering why you would want to unblick this. It is spyware that gathers information about you & your computer and sends it to someone else. Please visit the link below for more information.
http://www.liutilities.com/products/wintaskspro/processlibrary/iexplorer/
Here is a quote from the link:
iexplorer.exe is a process belonging to the AdClicker advertising program. This process monitors your browsing habits and distributes the data back to the author's servers for analysis. This also prompts advertising popups. This process is a security risk and should be removed from your system.I hope this helps you.