Testing of correlation coefficients


I am wondering if there is any way to test the significance of the correlation coefficients provided in the Eviews 7 cross-correlogram. There doesnt seems to be a function for this in Eviews 7. Can someone advice if it is possible to use the following test instead? http://vassarstats.net/textbook/ch4apx.html.
A second - more general question. Is there any rule on what is a strong or weak correlation (say cor. coeff. of 0.4x vs. 0.6x)? The above test will only tell me whether the coefficient is relevant on a certain significance level but I would also need to assess the level of correlation.

Thanks for your help.