TightVNC (or other windows VNC viewer) connecting to OS LION

Have been using TightVNC viewer on a windows based PC to connect to my iMac without any problems.
Upon upgrading to Lion, I am no longer able to connect to VNC.
When I connect, I get a gray screen with my username, prompting me for a password. I am unable to type or click, etc.
I understand there is a new protocol for connecting to VNC. I have no problems mac-to-mac or even iphone-to-mac , however, I am looking for a solution for pc-to-mac.
Does anyone know how to configure tightVNC to make this work? Can anyone recommend another software that would work?
Thanks for any input
Mike

We are having the same issue with our Lion. With the help of this thread:
http://forums.macrumors.com/showthread.php?t=1194456
We came up with a workaround:
* Use RealVNC client
- this uses the ZRLE encoding (which is what Lion VNC uses); TightVNC does not use it.
Configure RealVNC client with:
* Misc Tab
Uncheck "Shared connection (do not disconnect other viewers)
Uncheck 'Only use protocol version 3.3
* Default Tab (Load/Save Tab)
Save as default (click Save)
* Now run VNC viewer and enter the password to authenticate.
Caveats:
Screen Sharing seems to work but not remote management
Due to the new multiuser login with Lion, you'll need to log out of OS before disconnecting to VNC. If you don't log out, you can't reconnect in.

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tzittle wrote:
I am trying to use my 2011 iMac (running most recent Lion build) to connect and work on my Windows system at work.
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http://www.microsoft.com/mac/remote-desktop-client
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http://forums.macrumors.com/showpost.php?p=7221295&postcount=20
http://forums.macrumors.com/showpost.php?p=9081641&postcount=28
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