Serial Correlation and Heteroskedasticity

[kots]

Hi everyone, I use Eviews 7 and I have a problem when modeling my series. My LM test generates Obs*R-squared greater than critical value(x2) i.e. 10.109 when the critical value is 3.841. The same problem I face with heteroskedasticity measurements which is about200! This means that my series have serial correlation. How I can remove serial correlation and make my series homoskedastic in order to complete my analysis? Thank you in advance!