Please check the respective help article
regarding the Crystal reports conversions. In general the converters are just a helper utility that were created out of a good will to save some time. However we can recommend you to create your reports from scratch. You will get to know Telerik Reporting better and you will have finer control over the produced output. Additionally please note that there are some parts (items/sections) that do not have analog at our end and vice versa, which means that you will have to fix those reports manually.
It is not in our current plans to include such a converter in the Report Designer.
the Telerik team
Have you tried the new visualization options in Telerik Reporting Q1 2013? You can get them from your account.