You need to set the field size to 'double' (floating-point) or 'decimal'
(fixed-point). To do this, open your table in design view, select the field
you want to be able to accept decimal numbers. Look down, find the 'Field
Size' property. Change this to either Double or Decimal depending on whether
you want fixed-point or floating-point numbers.
A fixed-point number is useful for things like money, where you always know
how many decimal places you need.
A floating point number is useful for qoutients, money-market distributions,
and any other field where the number of decimal places is not known at
design-time.
Hope this helps.
