Forums Scripts & Popups regsub to remove NON numerics ????

ok i suck at regsub, and i could always just do a dirty big $remove but i thought someone might know a simple $regsub for it that wont look so ugly, like regex any non number and replace with nothing?

I want to remove anything besides 0123456789 from a var

example
var %value = 489.290djdue93jd93hjs923" $+ , $+ 59sj39e3333" ssss999 $crlf blah 1
(ie: anything at all)

Result i want 4892909393923593933339991

Thanks in advance guys. (and girls?)