If it requires more RAM...
At the Apple Icon at top left>About this Mac, then click on More Info, then click on Hardware> and report this upto but not including the Serial#...
IMVU’s Mac client will run on Mac OS X 10.5 and later, including Snow Leopard. The release of the Mac client for IMVU follows on the heels of the debut of IMVU 2Go, an app for the iPhone. Run IMVU 3D Messenger on Mac, Linux & Chrome OS. 3D Chat, get your own avatar and chat with other people in the world. Lots of developers work with open source.
Hardware Overview:
Model Name: iMac
Model Identifier: iMac7,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 6 GB
Bus Speed: 800 MHz
Boot ROM Version: IM71.007A.B03
SMC Version (system): 1.21f4
Then click on Hardware>Graphics/Displays and report like this...
NVIDIA GeForce 7800GT:
Chipset Model: GeForce 7800GT
Type: Display
Bus: PCI
Slot: SLOT-1
VRAM (Total): 256 MB
Vendor: nVIDIA (0x10de)
Device ID: 0x0092
Revision ID: 0x00a1
ROM Revision: 2152.2
Displays:
VGA Display:
Resolution: 1920 x 1080 @ 60 Hz
Depth: 32-bit Color
Core Image: Supported
Main Display: Yes
Imvu Mac Os X
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Imvu Mac Os X
Display:
Imvu Desktop Download Mac
Status: No display connected
Jan 4, 2013 2:55 PM