need help in writing spamassassin rules on FC3

[Ankush Grover]

hey friends,

 I am using postfix 2.1.5 on Fc3 with MailScanner 4.44 version +
spamassassin 3.1.1 + clamav 0.88.3 + Mailwatch + Isoqlog + Fetchmail +
Dovecot.

The problem I am facing is that I am receiving lot of spams with the
subject as "Viagra or Vijagra"  these are not alone words mostly it is
like this "sxafdviagra or wxxxweessfsdvijara" any words but the
subject line do contains "Viagra or Vijagra" so If I can write a rule
which treat the mail as spam if it contains "Viagra or Vijagra" in the
subject line.

I am not a programmer by any means but I know through perl regular
expressions one can write such  a rule, but so far I am not able to
write such a rule.

Any kind of guidance or help will be very fruitful.

Thanks & Regards

Ankush Grover