Select info from table where row has max date

table looks something like this:

group    date      cash  checks
  1    1/1/2013     0      0
  2    1/1/2013     0      800
  1    1/3/2013     0      700
  3    1/1/2013     0      600
  1    1/2/2013     0      400
  3    1/5/2013     0      200

I want to get the each unique group where date is max and checks is greater than 0. So the return would look something like:

group    date     checks
  2    1/1/2013    800
  1    1/3/2013    700
  3    1/5/2013    200

SELECT group,MAX(date) as max_date
FROM table
WHERE checks>0
GROUP BY group

That works to get the max date..join it back to your data to get the other columns:
Select group,max_date,checks
from table t
inner join 
(SELECT group,MAX(date) as max_date
FROM table
WHERE checks>0
GROUP BY group)a
on a.group = t.group and a.max_date = date

Inner join functions as the filter to get the max record only.

FYI, your column names are horrid, don't use reserved words for columns (group, date, table).