Do mean round corners?
Yes in either case.
Code:
.module {background: url(../images/bl_grey.gif) 0 100% no-repeat #dddddd; width: 20em; margin-bottom: 10px;}
.module div {background: url(../images/br_grey.gif) 100% 100% no-repeat}
.module div div {background: url(../images/tl_grey.gif) 0 0 no-repeat}
.module div div div {background: url(../images/tr_grey.gif) 100% 0 no-repeat; padding:10px; padding-top: 0px; padding-bottom: 2px;}
.module div div div div {background: none;}
I would add a suffix module.round{} etc..
then apply via the module manager.
Cheers,
Brian