Help interface BenQ GSM Modem to IC16F62A

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I got a BenQ Gsm Modem, so far I got it running sending AT commands from PC to GSM module via hyperterminal using USB to serial converter. The GSM module is operates in 3.3v, Pic16F628A on 5v.
Questions:
1.] Obviously I going to need a voltage divider between the module and PIC, but how can I or can Imake Pic16F628A operate on a 3.3v, based on the datasheet in can operates 2.0-5.5v

2.] I want to try using the following setup connection(refer to the attach image) and the code below..

Include "modedefs.bas"	' Include serial modes
'Definitions
DEFINE OSC 4			'for 4 Mhz
'DEFINE OSC 8			'for 8 Mhz

DEFINE HSER_TXSTA 20h	'hardware assign

DEFINE HSER_RCSTA 90h	'

DEFINE HSER_BAUD 9600	'for 9600 Baud rate

DEFINE HSER_SPBRG 12	'

DEFINE HSER_CLROERR 1	'

TRISB=%00000000
PORTB=%00000000

' Send signal tp PWON
    HIGH PORTB.7
    PAUSE 500
    Low PORTB.7
    PAUSE 3000
   
start:
HSEROUT ["AT",13]                    'Send AT to modem followed by a CR
HSERIN 5000, start, [WAIT("OK")] ' wait 5sec to reply.
PAUSE 1000

goto start
End

Where it simply waits for 'OK'. Can I use PortC.6 (with max232) to COM Port at the same time?

thanks,
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