How to share entire drives

Thanks WebMattR, will try that.
Hope it'll also clear the subfolders on that drive...
And I hope I can make a permanent link from the other machine with $ sign...

When I type \\NETBOOK\c$ I am presented with attached screen, I can enter the p/w (it's the same on all three computers) but what to enter as NAME ?

next to X is ACCESS REFUSED in Dutch...

After all the $ fiddling for some reason my network does not work correctly anymore, so here's the situation:
BARENDNETBOOK has Windows 7 Starter
BARENDLAPTOP has Windows XP Pro
BARENDPC has Windows 7 Ultimate

All are member of WORKGROUP.
Both W7 machines are set to "Let Windows handle..."
On all at the roots of the drives are shared, at least.

FROM BARENDPC I cannot access anything on BARENDNETBOOK
FROM BARENDPC I can access everything on BARENDLAPTOP

FROM BARENDNOTEBOOK I cannot access anything on BARENDNETBOOK
FROM BARENDNOTEBOOK I can access everything on BARENDPC

FROM BARENDNETBOOK I cannot access anything on BARENDPC
FROM BARENDNETBOOK I can access everything on BARENDLAPTOP

Help, my head is spinning...
Any help greatly appreciated!

Tried everything, nothing helps.
Took out the XP machine, so both are W7 now, made a homegroup on both, entered the cryptic 10 digit password on both, all succesful.
Shared folders on both.
Ping OK both directions.
But still my pc can access the netbook, but the netbook can't access anything on the pc.
Everything I to access, even the root of c, leads to the no access message.
Only the printer connected to the pc works.
So I'm out of options it seems...

Is there a simple program that takes the pain away?
Found a Cisco program that proposes to do just that, but it's expensive and seems awfully complicated itself...

Just found out that the only folder (no matter what I share on the PC) I can access from the Netbook is the PUBLIC folder (c:\users\public).
Should this tell me something?