open a command promt in the directory with maxcoin-qt.exe (in windows explorer press shift and right mouseclick - open console here)
type:
maxcoind
this starts the wallet
open a new command window and type:
maxcoind getbalance
you should see you balance
to send coins just type:
maxcoind sendtoaddress (maxcoin adress) (amount)
to speed it up with fee :
maxcoind sendtoaddress (maxcoin adress) (amount) settxfee (littleamount)
for example you could donate me by:
maxcoind sendtoaddress maC8GmoR4Cdd4FQaYB1V3bLp3SR6WGXvTE 10.0
or
maxcoind sendtoaddress maC8GmoR4Cdd4FQaYB1V3bLp3SR6WGXvTE 10.0 settxfee 0.00001