Do a uninstall, defrag, trash emptied and a cold boot. Then reinstall, warm boot and see if it loads. It acts up like that with us every now and again. Not the file part, just won't load up. Usually from the cache being full it seems like. It refuses to load no matter what we do w/o a warm boot.
Ours came with the Office 2000 so it may never even had the file yours wanted. But I do check weekly and do the updates so it may have gotten deleted from that too.
The biggest prob we ever had with 98 was the cache overloads fast and just emptying it without a reboot isn't always the cure all without restarting. So its second nature to defrag etc a couple times a day and restart. Keeps the system/s fast at any rate.

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[This message has been edited by Gemini (edited 09-03-2001).]