No sound available to Windows when Pro Tools LE is running?

[Dr. Spankenstein]

Hi there,

I've got a problem where I can't use my MBox for audio playback outside of Pro Tools LE when Pro Tools is running.

Can any please help?

This is my first post so hopefully my system specs will appear somewhere.

EDIT: They do but not in this post! Here they are again.

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Pro Tools Information
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Pro Tools LE 8.0.4
M-Box 2

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System Information
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Time of this report: 8/20/2010, 16:37:24
Machine name: VAIO
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7600) (7600.win7_gdr.100618-1621)
Language: English (Regional Setting: English)
System Manufacturer: Sony Corporation
System Model: VPCF11C5E
BIOS: BIOS Date: 09/23/09 11:58:43 Ver: 08.00.10
Processor: Intel(R) Core(TM) i5 CPU M 520 @ 2.40GHz (4 CPUs), ~2.4GHz
Memory: 4096MB RAM
Available OS Memory: 4014MB RAM
Page File: 2341MB used, 5684MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7600.16385 32bit Unicode