Longtables in figure floats?

[Mesner Strast]

Hi I've got a figure float with many sub-figures which I have put into a longtable. 
The thing is that the figure float runs into several pages but the longtable doesn't 
seem to want to split. How can this be done? Any suggestions? Thanks.

Signup for your free Virtual Countries E-mail address at http://www.scotland.com