[R] Any tools for working with US 2000 census data?

[Zembower, Kevin]

I've been given the job of extracting some data from the United States
2000 census (files at
http://www2.census.gov/census_2000/datasets/Summary_File_2/Maryland/all_
Maryland.zip 52M). I'm only interested in Census Block Groups (CBGs)
located within Baltimore City, Maryland. Additionally, I just have to
extract certain data fields. I think I'll be using Summary File 2. This
is my first experience working with US census data.

I wasn't successful finding anything using RSiteSearch, although there
were some packages with data extracted from the US 2000 census.

Are there any pre-constructed tools in R for working with this data?
Does the US 2000 census data itself come packaged in R? If there are no
R tools, I'd welcome any suggestions on working with this data from
anyone experienced with it.

Thanks for your advice and suggestions for me.

-Kevin 

Kevin Zembower
Internet Services Group manager
Center for Communication Programs
Bloomberg School of Public Health
Johns Hopkins University
111 Market Place, Suite 310
Baltimore, Maryland  21202
410-659-6139