HOW TO CONNECT WINDOWS VISTA TO WINDOWS 2003 SERVER AND WINDOWS XP PRO

PLEASE CAN SOMEONE HELP ME WITH THE QUESTION ABOVE?

I WANT TO CONNECT A LAPTOP RUNNING WIN VISTA TO AN EXISTING NETWORK (WIN 2003 SERVER) AND WINDWOS XP PRO DESKTOP PC’S

I AM HAVING PROBLEMS WITH THE CONNECTIONS.

ITS VERY URGENT.

THANKS

YOURS SINCERELY,
GEORGE.