>When I right mouse click on My Computer on the General tab I see that I have 1.50 GB of RAM installed. How can I get that information via an API or other method? The MEMORY() and some other SYS() functions did not return the information I desire.

You can try with WMI

loLocator	= CREATEOBJECT('WBEMScripting.SWBEMLocator')
loWMI		= loLocator.ConnectServer()
loOSs		= loWMI.ExecQuery('Select * from Win32_OperatingSystem')
for each loOS in loOSs
	with loOS
		? .FreePhysicalMemory, .FreeVirtualMemory
	endwith
endfor

[Update]

Ooops, RAM installed... Should read carefully Hugo...

loLocator	= CREATEOBJECT('WBEMScripting.SWBEMLocator')
loWMI		= loLocator.ConnectServer()
loCSs		= loWMI.ExecQuery('Select * from Win32_ComputerSystem')
for each loCS in loCSs
	with loCS
		? .TotalPhysicalMemory
	endwith
endfor