Notes about the VHTML file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The VHTML file type is primarily associated with 'VITRAGE Apache Module' by Siberian Web. VITRAGE is an HTML extension (extra advanced SSI) and on-the-fly HTML optimizer for the Apache 1.3.x Web server. The VITRAGE Apache module allows extending HTML with new tags, scenarios, variables, conditional constructions, iterations, etc.