Yes, in Vegas, put the footage on a 24p timeline. In the project settings, change the deinterlace method to Interpolate. Then render the footage as 24p.
It does a very good job.
However, if the footage has a lot of fast movement, any conversion to 24p by any means will produce stroby footage, with various artifacts.
Also, if the footage is 30p, it most likely will not make a good conversion to 24p. Again, with any software.