Fullscreen issues...

Tried to take an already completed project and turn it into a screen saver... And for some reson it's not showin' up. The error comes out fine. I spent a couple hours looking this over and still can't find it. Can anyone do me a favor and look it over for me? Thanks in advance.

Code:

        mov [fullscreen.dmPelsHeight],1024
        mov [fullscreen.dmPelsWidth],1280
        mov [fullscreen.dmBitsPerPel],32
        mov [fullscreen.dmSize], rawr2-rawr1
        mov [fullscreen.dmFields], DM_BITSPERPEL or DM_PELSWIDTH or DM_PELSHEIGHT
invoke  ChangeDisplaySettings, fullscreen, CDS_FULLSCREEN

        cmp eax, DISP_CHANGE_SUCCESSFUL
        je noclose
invoke  MessageBoxA, HWND_DESKTOP, 0, 0, MB_OK
invoke  ExitProcess, 0
noclose:

        mov [wMain.hInstance], handle
invoke  LoadIcon, 0, IDI_APPLICATION
        mov [wMain.hIcon], eax
invoke  LoadCursor, 0, IDC_ARROW
        mov [wMain.hCursor], eax
invoke  RegisterClass, wMain
invoke  CreateWindowEx, WS_EX_APPWINDOW, Class, tMain, WS_POPUP or WS_VISIBLE or WS_CLIPCHILDREN\
                        or WS_CLIPSIBLINGS,CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, handle,\
                        NULL
        mov [hMain], eax

EDIT: Note to self and others for future referance... All that display settings thing'll ever do is change the screen settings and annoy people with long loading. For a decent screen saver, you don't want to change the screen size... So, just change the windows size (which is what you have to do anyway, changing the size of the screen or not) and with WS_POPUP, that'll work fine in giving a full screen effect.

Code:

invoke  GetSystemMetrics, SM_CXSCREEN
        mov ebx, eax
        push ebx
invoke  GetSystemMetrics, SM_CYSCREEN
        pop ebx
invoke  CreateWindowEx, WS_EX_APPWINDOW, Class, tMain, WS_VISIBLE or WS_CLIPCHILDREN or WS_POPUP\
                        or WS_CLIPSIBLINGS,0, 0, ebx, eax, NULL, NULL, handle,\
                        NULL