manlayenea

when i go to eqatlas, eqmaps, eq-toolbox, or eqgui and download a zipped file this is what happens, whenever i go to my desktop after downloading a .zip file and right click it to extract it i get the message "No files to extract!" and wehn i try left clicking the icon i get the message "The Compressed(zipped) Folder is invalid or corrupted.
it doesnt matter wich file either so obviously something in my settings were changed but ive never messed with them. i dont use norton for antivirus i use AVG but i only started having the problem about a week or so ago.
i hope ive been descriptive enough and please excuse my spelling mistakes. my aim sn is kitwilde catch me when u can...this is really bothering me. and if u couldnt tell already im fairly computer illiterate =/
ive posted on other forums and searched all over but i dont know what to do. ive spent all day looking through forums and now my eyes hurt and id like to know if someone can help me =/
-thanks

*links to the sites i mentioned in order of apearance
http://www.eqatlas.com
http://www.eqmaps.com
http://www.eq-toolbox.com
http://www.grisoft.com