Weld Lisp or add-on...?

Hi All,
Is there a good free weld lisp or a add-on available that:
With dialog box - is fully customizable for settings, such as colours,
layers, text size or style, etc. Shows a preview of the weld has it is being built (eg. with tail, all round, site flag, etc) Covers all standard welds either ANSI and/or ISO weld symbols Can be used with metric values for weld sizes Can work in either AutoCAD 2004 and/or 2002 on Windows XP
Any help on this would be much appreciated.
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