Firstly, you have to create a blogroll widget. How To Create A Blogroll Widget ?
2, Go to Design => Page Elements => Add Gadget
3, Choose (Blog List)
4, Add Your Favorite Blog URL's in (Add to List)
5, Click SAVE [Don't Add Title Of Widget]
2, Then, search with Ctrl + F BlogList1
3, Then, look around at the bottom, there is
<div class='widget-content'>4, Add this code, exact under the code above
<div style='overflow:auto; width:ancho; height:125px;'>5, Then, scroll down untill you found
6, Add </div> under <b:include name='quickedit'/>, so the code will be like this
7, Save Your Blog's Template, You Are Done.