a RegEx to find all HTML tags *not* matching a list

Hello all,

I'm stuck. I've got a simple regex like this :

oRegExp.Pattern = "(<(div|span))"
Text = oRegExp.Replace(Text,"~{$1}~")

, which works ("~{" and "}~" are just delimitors for debugging purposes).

But now I would like to to find all html tags which are *not* either "div" 
or "span", and can't seem to find a solution.   I thought that simply adding 
a "^" negate would work :

oRegExp.Pattern = "(<^(div|span))"

Alas, now /nothing/ matches anymore (but I'm not getting any errors). :-(

I've just spend an hour or so tryinging to google a solution, but can't get 
them to work either. :-|

tl;dr:
How do I create a pattern that will match all html tags /but for/ the ones 
provided ?

Ah, almost forgot to mention: its about VBScript as running on XP pro.

Regards,
Rudy Wieser