IIS 5.1 and Caching

Hi,
my web-app runs under iis 5.1 and winXP. Now, i've some strange problems with the caching of iis.
If I replace some javascript-files in the wwwroot, everytime i browse the app, the same old javascript-file is shown and loaded in the browser cache.

I tried the following:
- clear browser cache (IE & Firefox)
- add headers in aspx-file:
<meta http-equiv="expires" content="0">
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
- restart web-site
- restart IIS-Admin-Service
- reboot system

All with no success. Only reinstall of iis seems to work. :ehh:

Any Ideas how to clear the IIS-Cache?

Thank you for response!

Greetings,
Lars