Preloading Files

[font=Tahoma]I have been searching and testing for awhile now with no luck. I am not wanting to preload images, I am wanting to preload data files that will be used a couple pages into my site. These files have aas extensions and I am wanting to get them into the users cache before they hit the page that needs them. Each file is between 30-60kb. I am wanting to download these in the background, unknown to the user.[/font]
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[font=Tahoma]Ive tried to have a really small iframe that points to the file, but it is an unknown filetype and it just asks the user to download the file. Obviously I dont want this.[/font]
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[font=Tahoma]I tried using the Javascript Image object, but that didnt work because it rejected the src I gave it.[/font]
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[font=Tahoma]So, I am wanting to get these 5 files in the users cache before they try to access the certain page that uses them.[/font]
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[font=Tahoma]Any suggestions?[/font]
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[font=Tahoma]Thanks for any help. :beer:[/font]