Making a crosshair in HLDM

Hi fellers.

I've found a cool sprite in Half-Life 2 and want to use it for HLDM.
I took a screeny of that sprite in Hammer, loaded it up in Fireworks and then I have created this crosshair:



Now I've got SpriteWizard but nothing seems to work. I got no
transparency (there is just a black box - well exactly the picture
above - in the middle of the screen in game) and I tryed all 4 possible
transparency-options in SpriteWizard without a positive result.

I have also exported the *.png in Fireworks as a 8-Bit BMP.

What will I have to do to get this working?

Thanks in advance - ding.

hmm, you sure you wanted this in the HL1 forum?

Well I wasn't sure if I should post it into HL2 editing because I took
the crosshair from HL2. But I want to export the crosshair in HL1DM and
so I guessed that it will fit right in here.