1. The PIX can be configured for remote VPN access via PDM, however, that's difficult to address in a text message.
I think you will find it easier to configure through the command line. If you still prefer to use PDM, it has an excellent embedded help. Just https to the pix inside interface and select help.
For a basic CLI configuration of a pix for vpn client access, see the following link:
http://www.cisco.com/warp/public/110/pix3000.html
Note this is for 6.0, but applies to 6.2 as well.
2) You can download the vpn client from the software center:
http://www.cisco.com/kobayashi/sw-center/vpn/client/
BTW, if you are going to manage the PIX with PDM, you need to upgrade to 2.x.
HTH
Jeff