I use "Resco Keyboard Pro" since the WM6 upgrade.
It changes the touchscreen-keyboard-layout and the layout from the real keyboard, too.
My layout is german, but I took a look at the settings and swedish is available too...
Test free for 30 Days ...
(maybe then you already have you swedish ROM of WM6)
Samsung Galaxy SII @ Android 2.3.7 (cooked)
HTC Flyer @ Android 2.3.7 (cooked)
HTC HD2 @ Android 2.3.7 (cooked)
HTC HD2 @ WM 6.5.5 (cooked)
T-Mobile MDA Compact III - @ WM6 (Black & Blue v4.3)
T-Mobile AMEO @ WM6.5 (Athena Project)