Oops, I knew I forgot something...

Code:
'   Mister E PIC multi-calc "USART calc"
'   OSC = 20MHz
'   Baudrate = 19200

RCSTA = $90 ' Enable serial port & continuous receive
TXSTA = $24 ' Enable transmit, BRGH = 1
SPBRG = 64  ' 19200 Baud @ 20MHz, 0.16%
DEFINE HSER_RCSTA 90h ' Enable serial port & continuous receive
DEFINE HSER_TXSTA 24h ' Enable transmit, BRGH = 1
DEFINE HSER_SPBRG 64  ' 19200 Baud @ 20MHz, 0.16%
DEFINE HSER_CLROERR 1 ' Clear overflow automatically