Seems like work files from your scanner, but -indeed - they are ridiculously large.
By convention, files and folders in c:\windows\temp are only temporary, and can be deleted as you like. Some of them (with a date of today) can be in use, but everything dating from before the last boot can safely be discarded.
Also read through Grif Thomas' post "How to clean unwanted files from the hard disk" in http://reviews.cnet.com/5208-6121-0.html?forumID=45&threadID=22053&messageID=243397
Kees
I have a folder in my win 98se operating system that I want to get rid of. However, I have no idea what it does or where it came from. It is c:\windows\temp\newscan and contains 4 files; "monday, october 07, 2002_" size 139,677KB, "monday, october 07, 2002 (2)" size 308,704KB, "monday, october 07, 2002 (2)" size 52,637KB, and "thursday, february 05, 2004_" size 423,167 KB.
I will not delete these or move them to another drive until I have SOME idea of what they are doing there. Right-clicking properties offers no helpful information. I can't find anything on the web. These files are taking up more than 1/10th of my hard drive and I would love to get rid of them.
In the past couple of years (3 files were created in 2002), I have completed numerous scans, virus checks (both online and off), upgrades, ad-aware type programs, file checkers, edited registry, everything that is normal and many, many more that were not. I have searched on the web in previous years for answers and found none. Nothing in the system corrolates with the dates these files were created. I can find no modifications to the files after creation. The are not part of a system install or major system upgrade that I can find. I have had one virus attack the computer via email attachment in the past 6 years. Removed and fixed quickly (worm). NOTHING, no answers.
No clues. I am very cautious and will not mess with anything unless I am sure I know what I am doing. In trying desparately to create a network, I have spent the past 2 days researching every problem I have come across (see other post in networking).
I'm pretty handy around a computer, but this problem has me completely stumped.
ANY ideas would be appreciated!
Thanks, Randi

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic