I've tested the following code that you gave me and it resulted in a weird error.. I've forgot to copy the error.. .. uhh .. was something about clock scan -gmt or something like this. What you sugest?
#makes the date a unixtime format
set a [clock scan aug 08 2002 10:00]
#extrackts current time(in unixformat) from $a
set b [expr [unixtime] - $a]
#makes $b into days,hours,mins....
set difference [duration $b]
Ignorant and lazy people will save 30 minutes by chosing simple config file. Smart ones will save 3000 minutes of *everyone's* time by opting for complete config file.