SNMP heating up - new unique problem...!!!

Hey wonderful people here,

A new problem....??????? and faced for first time....

PROBLEM:

Presently desktop having SNMP of 220 Volts (most probably) but the entire machine gets very heated too soon.

The engineer saw and said that change SNMP to 350 Volts.

My system configuration:

P4 3 Ghz
512 MB RAM
80 SATA HDD
CD/DVD combo
inkjet printer

MY QUESTION

I actually fail to undrstand so much technical issues like volt etc...so

CAN ANYONE PLEASE SAY WHETHER I REALLY NEED TO CHANGE SNMP FROM PRESENT 220 volts to enginner suggested 350 volts...????????

Any idea / suggestion / advice...????

p.s. I am from INDIA........................................