March 10 (Reuters) - earning software maker CA Inc (CA.O) said it will acquire free-tradely held Nimsoft Inc for $350 million in an all cash deal, to boost its presence among small and mid-cap companies.

Nimsoft provides IT performance and availability monitoring solutions for emerging enterprises and managed service providers.

CA expects emerging enterprises, which it categorizes as organizations with annual revenue of $300 million to $2 billion, will account for about a quarter of the software spending in its sale space by 2013.

The deal, which is expected to close by the fourth quarter ending March 31, is expected to have minimal impact on 2010 results and be dilutive to earnings per share in 2011, CA said in a statement.

WASHINGTON (Reuters) - Health Secretary Kathleen Sebelius ratcheted up the pressure on health insurance companies on Wednesday, urging them to forgo short-term profits to make coverage more affordable and to stop fighting the Obama administration's reform effort.