include '%fasm%/win32ax.inc'
section '.code' executable
start:
        mov ecx,i
        lea edi,[offset+i]
        mov al,'\'
        std
        repne scasb
        cld
        mov dword [edi+1],NULL
exit:
        invoke MessageBox,NULL,offset,'',MB_OK
        invoke ExitProcess,NULL

.end start

section '.data' readable writeable

        offset db 'H:\10\FL\Artwork\Wallpapers\Browser.html'
        i = $-offset    

        invoke RegOpenKeyEx,HKEY_CURRENT_USER,'Software\Image-Line\FL Studio 10\General',NULL,KEY_READ,root
        invoke RegQueryValueEx,[root],'BackHTMLFileName',NULL,NULL,offset,lpcbData
        invoke RegCloseKey,[root]
        mov ecx,lpcbData
...
section '.data' readable writeable
 
        root dd NULL
        offset rd MAX_PATH
        lpcbData dd MAX_PATH