singleton

Hi,

I'm trying to define a sinlgeton class but I'm having troubles to get it
compiled, my declaration looks like:

#include "tspthread.h"

#ifndef GPIOCONTROL_H_
#define GPIOCONTROL_H_


class GPIOcontrol: public TSPThread 
{
public:
        static GPIOcontrol* Instance();
        
protected:
        GPIOcontrol();
        virtual ~GPIOcontrol();
                
private:
        /**
         * The main thread method
         */
    virtual void run();
    static GPIOcontrol* pinstance;
};

#endif /*GPIOCONTROL_H_*/

But it doesn't compile on the line "static GPIOcontrol* Instance();" it
tells me "error: candidate is: static GPIOcontrol*
GPIOcontrol::Instance()"
and i don't understand what coudl be wrong, any help would be appreciated!

Thanks!
Ron

-- 
chEErs roN