>I'm in charge of explaining the Tableupdate function in my class.
>Looking at the help file, Tableupdtate uses a numeric variable as the first parameter to decide wether all the records are updated or only the current record;

Assuming that this, indeed, a bug in the MSDN that shipped with VS6 (I don't know, I don't have the old version loaded), it has since been corrected in at least the Jully 2000 MSDN. Go to MSDN website to see the documentation that gives the logical and numerical values.