Question : replacement for Netscreen Remote VPN

Since Netscreen remote VPN software is at the end of life, and will not support Windows 7 I need to find a replacement product.  I have a screen 5GT that  is working fine and I don't want to replace the hardware but I need VPN connectivity to my WinServ 2003 machine.  
The VPN features that I need most are drive mapping to the remote server folders so that my users can easily access the shared data.  Netscreen worked great for this.....
Any suggestions greatly appreciated.

Answer : replacement for Netscreen Remote VPN

Not sure how your Netscreen VPN is set up, but mine are set with preshared keys, not certs, so on the Authentication tab in Shrew client, Auth Method would say Mutual PSK, and then enter the key on the Credentials sub-tab.

For more info, there is also a Juniper/Netscreen how-to for Shrew at http://shrew.net/support/wiki/HowtoJuniperSsg