Two articles explaining how to replace XP_CMDSHELL with the CLR

How To Execute a DOS command when XP_CMDSHELL is disabled

http://www.mssqltips.com/tip.asp?tip=2087&ctc

Trading in xp_cmdshell for SQLCLR (Part 1) - List Directory Contents

http://www.sqlservercentral.com/articles/SQLCLR/65656/