>I need to know which Operating system is running on a PC,
>I know I have to Use OS() but how can I tell which is the OS ?
>I mean which number is associated to W98 or Win ME whhere can I find a table
>whith the code numbers of the Operating Systems ?
>thx

This is what I use

*-----------------------------------------------------------------------
#define VERSION_OF_WINDOWS	(val(ltrim(substr(os(), at(' ', os())))))

#define	WIN95_VERSION		4.00
#define	WIN98_VERSION		4.10
#define	WINME_VERSION		4.90
#define	WIN2K_VERSION		5.00
#define	WINXP_VERSION		5.01
#define	WIN2003_VERSION		5.02

#define	WIN98_OR_HIGHER		(VERSION_OF_WINDOWS >= WIN98_VERSION)
#define	WIN2K_OR_HIGHER		(VERSION_OF_WINDOWS >= WIN2K_VERSION)
#define	WINXP_OR_HIGHER		(VERSION_OF_WINDOWS >= WINXP_VERSION)
*-----------------------------------------------------------------------