change logo to larger

I have read the instructions to change the logo to larger however once changed it causes the menu to shift right in addition thel ast part of the instructions ask to change $searchwidth=$templates 290 but that string does not appear in either the index or layout file--- please advise with correct direction

In layout.css:

.header {
height: 99px;
margin: 0 auto;
}

and

.logo {
height: 99px;
width: 410px;
float: left;
}

change first height: 99px; in both css classes

thanks for the response but im a lil confused my logo is 1030 x98 in index php do i still change that to my new logo size and then go to layoutt.css and change as you indicated above?
and what do you mean change first height 99px; in both classes

So in:
.header {
height: 99px;
margin: 0 auto;
}

and

.logo {
height: 99px;
width: 410px;
float: left;
}

in both case you see height: 99px; , so change value of 99 to some bigger.

Also you need to change this :

<a href="index.php"><img src="<?php echo $template_path ?>/images/logo_<?php if($transparentImage=="white") { echo "black"; }else{ echo "white"; } ?>.png" width="381" height="96" alt="joomla restaurant template" /></a>

it is located in index.php of template. You need to change width="381" height="96" to match your logo size.

thanks i have changed the index.php file but you are saying change the height in the layout.css file under header and logo to something larger than 99??????????? how much larger any number you suggest?
isit just random
and what about this part of the instruction -Next step is to edit CSS stylesheert layout.css (located in /templates/hot_templatename/css) and find logo class. It usually looks like this
.logo {
height:79px;
width:288px;
float:left;
disregard i got it)

Ok, great, just make note that height value in layout.css should be 3px bigger that one you set in index.php