convert todays date to string and remove invalid characters not allowed in a file name.. use the resultant string as a name for ur folder containg the images...
in the asp pages.. set the image folder path as a variable "myimagepath" which should be manipulated using the current date converted to a string with all invalid characters removed...when calling images in ur pages.. the code shall be something like this
<%=myimagepath%>/image001.jpg
then put a code in the global.asa file to do the following
1. get todays date and subtract 1 from it
2. then covert it to string and remove all invalid characters..
3. next look for a folder name which matches the resultant of manipulation done in step 2
4. if the folder is found.. rename it to todays date converted into a string and all invalid charcters removed
5. if the folder is not found of yeterdays date.. then resume next
this way u will have a unique folder name everyday and if someone leeche out images / file form ur server.. it wont be for any long than a day !!
lemme know if this worked or not!!