Editor's Note: The following are questions received from viewers of "Mad Money," seen every day at 6 p.m. EDT on CNBC.

What do you think of Pixar (PIXR) ? -- Peter from Florida

James J. Cramer

: Pixar announced an

earnings miss last week due to weak DVD sales for

The Incredibles

. Despite the stock's 12% decline since, I want to avoid the name here. I have a rule of thumb that says

wait 30 days following an earnings miss before making any purchases, and I have lost money nearly every time I have ignored this discipline.

When is a good time to buy Google (GOOG) - Get Report?-- Darryl from Ohio

James J. Cramer

: How about buying some right now and then using weakness to add more? Look, this company can earn north of $7 a share in 2006, and I think you have to be willing to pay 50 times that number for it to be fairly valued relative to

Yahoo!

(YHOO)

, which I own for my Charitable Trust. I am using a $350 target price for Google. (To see all of the holdings in my charitable trust, visit

ActionAlertsPLUS.)

Why wouldn't a Microsoft (MSFT) - Get Report acquisition of Oracle (ORCL) - Get Report make sense?--Michael from Los Angeles

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James J. Cramer

: Microsoft caters to consumers like you and me, while Oracle is geared more toward businesses. In that sense, I don't believe the two companies would make a good fit because it would lack synergies.

Interested in more Cramer? Check out Jim's rules and commandments for investing from his latest book by

clicking here

. It's a series of articles from Cramer on how to become a better investor. The following table lists some of the rules that Cramer dissects.