>I uses the following code in VB6 for printing to a dot matrix
>printer:
>
>Open "LPT1" For Output As #1
>Print #1, Trim(strCustName)
>Close #1
>
>How could I check whether the printer is ready or not? Thanks.

Why not use the printer object instead?
eg.

Printer.print "My text Here"
Printer.EndDoc