I need to get or create an ActiveX control to generate barcodes for Code128 Auto OR Code39 Ext (anyone would do).
i would like to know where i can get free ActiveX control for this.

Also i have the font for Code39Ext but don't know what should be the "start bit", "stop bit" and how to "compute the checksum"....without which a scanner won't read. Using this font i can create my own barcodes if i can get info on those three factors

so any help would be appreciated