hi Tozar,

The steps for Internet Explorer 7 and 8 are similar:

For IE7:
Click the Tools button, then click Delete Browsing History



For IE8:
Click the Safety button, then click Delete Browsing History



Then delete everything (or select just what you want to be deleted)



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You may want to look at "Private Browsing mode" of Internet Explorer


Internet Explorer named this feature as “InPrivate Browsing”. Similar to FireFox, You can press the shortcut key Ctrl+Shift+P to start InPrivate Browsing. You can also navigate to the menu, click Safety, click InPrivate Browsing.

see full details here:
http://www.syschat.com/private-browsing-guide-6745.html