Windows 7 and Access with large queries running - can you multitask

[Pack10]

In a corporate environment when using XP and Access 2007, when I have a large query using large linked tables running, it seems to take all the resources of the PC. I am unable to alt-tab.
I can go to "my computer" and do lite things, but cannot open a second database.
Is anyone using Windows 7 in a corporate environment and does that machine resource issue go-away because the machine is able to use all the available memory? Or does Access behave like it always has?

Thanks

 

[jedraw]

Access is single thread.

 

[Pack10]

What does single thread mean in this instance? Does that mean that it will still hog the machine resources? Thx