???i recently purchased a computer with windows7 and mcafee preinstalled,i was told about avast home edition which i downloaded,the first scan it did it said -users\ray\app data\local\microsoft\windows\temporary internet files\low\content.IE5\QXIWD7\index[1].htm has a virus i sent it to the chest,my question is how do i findout what this file does and whether it is advisable to delete it or not.please help a computer illiterate.thanks 
Hi. Welcome to the Avast forums. 
It’s perfectly okay to delete Temporary Internet files. That’s what that file is. You can do so by going to Safety|Delete Browsing History in IE 8.
I’ve had that happen to me before, Avast detected a virus in a Temporary Internet file, and as soon as I emptied the Browser’s Cache (that’s what Temporary Internet files are) the alerts stopped.
Hope that helps a little.
You don’t say what the malware name was of the detection, many sites are now hacked with a frequency you wouldn’t believe.
– Every 3.6 seconds a website is infected http://forum.avast.com/index.php?topic=47096.msg396648#msg396648.
Commonly malicious obfuscated script or hidden iframe tags, which attempt to run scripts from a different site, so it is the detection of these scripts on hacked pages rather than a specific virus/malware. The source where there script or iframe tags point could be constantly cycling what malware script that is run, so ther is no exact way to say what is behind the door so to speak.
avast is one of only a few AVs that even look for this much less detect it and to date has been very accurate.
So as has been advised clear your temp internet files, me I use firefox with the NoScript add-on, which by default blocks scripts from running and has an option to also block iframes. This also puts another layer of protection in the way of malware, avast doesn’t require that the script runs to actually detect the malicious intent.
;D i have taken your advice and deleted the rogue temp file,hope i won’t need it.thanks for your help. 8)
OK but like David said you didn’t say what the name of the malware was. You may have been able to delete it but it wasn’t there for nothing. If it was really malicious, it was there to infect your system, and you got to check that, with a full avast scan and eventually a malwarebyte scan:
http://www.malwarebytes.org/
you may have had a false positive. In any case, before doing anything, submit it to Avast (right click and submit in the Chest list) and to virus total for analysis http://www.virustotal.com/
good luck 
You’re welcome.
Files in Temp folders are unlikely to be needed (there some exceptions, but not in the temporary internet files folder), that’s why they are temp folders, so there shouldn’t be an issue
:'(sorry logos and david i am new to this,i thought that the safest solution was to delete the file asap.some of the jargon used is unfamiliar to me as a computer iliterate.maybe avast forums should have a section for users like me :-[
Not a problem, there is no such area in the forums. If there is something you are unclear about just ask and whoever is helping will try to make it clearer.