Ohhhhhhhh.....
Are these the Apache log files we're talking about here?? Where there is one that shows all the page traffic and who's accessing the site, etc, and the other shows all the site error messages???
If that is the case you may not be able to access those files because they are open and locked for writing by Apache. If they are some other log files just ignore me and go on your way...

)
I'm used to the linux world for all this stuff and have to try and shift my thinking into Windows, and the first thing that pops into my mind is the files are open by another application and therefore not accessible to you.
My guess in this case would be that you need to somehow open the files in read-only access, and I don't know if you can do that with a link, and even if you can, if they are exclusively locked it may not matter....
Another possibility if it lets you get around the lock situation is if you can create a script that runs on a timer that simply copies the 2 files out to a new filename every so often. That way the new files should not be locked and may be accessible to you.
This is just the direction my mind went - it may not be the right direction, but it sounded good while I was thinking it!