You don't have to anything but just simply run this "RS FullScreen.exe" launcher. After you login Runescape will automatically switch to full screen.
You need direct x installed along with the latest updates for your drivers. If it doesn’t run the first time then try running it as administrator.
Virus Scan
File Info
Report generated: 13.9.2009 at 22.55.28 (GMT 1)
Filename: RSFullScreen.exe
File size: 63 KB
MD5 Hash: 0f35009e914c1c6d693eec9819515f63
SHA1 Hash: 286C37836B535446F20C2A4BCFD0CEBF7C61B28C
Self-Extract Archive: Nothing found
Binder Detector: Nothing found
Detection rate: 0 on 23
Detections
a-squared - -
Avira AntiVir - -
Avast - -
AVG - -
BitDefender - -
ClamAV - -
Comodo - -
Dr.Web - -
Ewido - -
F-PROT6 - -
Ikarus T3 - -
Kaspersky - -
McAfee - -
NOD32 v3 - -
Norman - -
Panda - -
QuickHeal - -
Solo Antivirus - -
Sophos - -
TrendMicro - -
VBA32 - -
VirusBuster - -
ZonerAntivirus - -
Scan report generated by
NoVirusThanks.org