MsDTC.exe MsDTCw.exe
(Microsoft)
Microsoft Distributed Transaction Coordinator. The Microsoft Distributed Transaction Coordinator is a transaction manager which permits client applications to include several different sources of data in one transaction and which then coordinates committing the distributed transaction across all the servers that are enlisted in the transaction. MSDTC runs on all Windows platforms and is installed by applications which need to use it, such as the Microsofts Personal Web Server, or Microsoft SQL Server.
Recommendation :
If you have it running, it is most probably needed by a Microsoft Application, so leave it untouched unless it is definitely causing you problems.