STEP ONE
Get your Crosshair. it should be correctly named as crossHair.png
STEP TWO
Open up Explorer, My Computer, Program Files, whatever.
STEP THREE
Open up in order: / C: / Program Files / Blockland / Base / Client / UI
STEP FOUR
If you want to backup the previous crosshair, name it something like crossHairs.png or something.
STEP FIVE
Move crossHair.PNG into C: / Program Files / Blockland / Base / Client / UI
STEP SIX
...
STEP SEVEN
Profit
