How to remove logo and insert own logo.

Hi Team,
I just downloaded the package, any one can advise how to remove the existing logo and insert my own logo on the top? i have problem to see the login buttom on the top as well even though i have enable it in the templete function , any one can help.. really appreciate.

replace logo is the best way for you.
right click your mouse to check the path,just replace the logo name as "logo.png" to your own logo.*remember to use the same name.
If you want to have your own name,you need to edit css file.

I have changend the logo.png with my owne file.
It works with Firefox, ChromePlus and Opera.
But with IE i get the problem that the picture is to small (see atteched file).
After Page refrech it works in IE also.

What can i doe?