Letter from US Immigration

I just got a mail from the Department of Homeland Security - U.S. Citizenship and Immigration Services (USCIS) informing me that my 2 year Conditional Permanent Resident will expire this July 11, 2009 and that I need to file Form I-751, Petition to Remove Conditions on Residence. Although I am already aware of this and I am planning to file my petition by April since USCIS requires everyone who is holding 2 year conditional permanent resident card must file their Petition to Remove Conditions within 90 days before their permanent resident card expires. If someone fails to do so it will result to automatic termination of status. "This I don't want to happen, or I will be deported" lol! Hubby keep on telling me to make sure that all the necessary papers and documents will be submitted as soon as April 11, 2009 because that's the start of my 90 days period before my Green card expires on July 11th. Hopefully, I will be able to get my 10 year Green Card after the I-751 Petition processing is done.