How will my credit be affected after selling this home?

I am listing my home that I have lived in for the past two years now. How will my credit be affected after selling this home?

Also, I recently purchased an investment property that I am listing as well. Should be in and out in <4 months. How will my credit be affected on both the purchase and sale on this property?

I checked out myfico.com and read a few threads on the topic, but it seemed to me that posters might be a little off on their assessments on this topic.

Thanks,

Gregg

Nobody has any experience with this that they can share?