1. Is there any pasabilites to make vnc connection with dsm plugin through built in manager vnc(i have rc4.key and i found place to put it on but i can't fund dsm plugin options or place to put this file in)
Yes it's possible to connect using MSRC4 DSM plug-in. Please a take a look on the screenshot.

2. How can i build my own vnc deployment version (it's ultravnc 1.0.1) with rc4.key and dsm plugin.
The VNC Deployment Wizard deploys our in-house developed MSI packages, which must expose a specific set of MSI properties to be compatible with the Wizard.
We could create an MSI package for your based on your requirements. This is a paid service but our rate is quite resonable. Please contact sales@s-code.com if you want to discuss it further. But may I ask you, why would you want to deploy such an old version UltraVNC? The Deployment Wizard can deploy UVNC 1.0.8.2 and also configure the DSM plug-in settings.