To the best of my knowledge there is not an easy way or OOTB way to
change the screen  resolution for an SPS area page. You can specify
the Hieght and Width of a web part though through the modify web part
property pane. If that doesn't help the other way you may be able to
make everything fit is to modify the default.aspx of that page  either
via opening in FP 2003 (warning unghosting will occur once you make
changes and save) or modifying the default.aspx directly in the
system files located in

"Local Drive\Program Files\Common Files\Microsoft Shared\web server
extensions\60\TEMPLATE\1033\SiteDefinition"