Double-clicking tab-".xls" file in the Explorer shell, Excel just opened it, no questions asked.

But selecting the same file from the File Open dialog, or the recently-used entry in the File menu, it threw up the "convert a delimited file" dialog.

Don't ask me why; *fuuuck* knows. Microsoft programming... :-(

(This is in Finnish Excel 2K on English Win 2K.)

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Also, BTW, saving the file via the "original file format, yes I know it might lose some formatting, no I don't mind, YES dammit replace the old version!" option, it writes out the *results* of formulas; to get them as formulas, you have to explicitly save those from NotePad, I found.

Oh, and if you use a foreign-language version of Excel, it will protest "#NAME?" if you paste in the actual formula text from Excel -- you have to translate stuff like "=SUMMA(B1:B5)" and "=KESKIARVO(C1:C5)" into English! (Which still beats the way it was under Excel 95, when Microsoft had gone too far in localising it, so actual *real* .xls files saved formulas in local-language -- with the consequence that the file was useless when opened in an English [or any other different-language than the original] copy of Excel. :-)