how to structure my CurrBal query

Hi All

Greetings from South Africa:D

I am very new too writing queries and would appreciate some help structuring a query to give me the CurrBal per CardNo.

I have table that looks like this:

CardNo DepDate CurrBal DepAmnt TransNo
1 2013-06-04 11:50 AM 79 0 6
2 2013-08-05 15:34 PM 52 100 41
2 2013-08-05 14:11 PM -48 0 40
3 2013-07-09 13:52 PM 49 0 12
3 2013-07-22 13:51 PM 11 0 14
1 2013-06-12 10:46 AM 63 0 7
3 2013-07-15 14:04 PM 33 0 13
2 2013-08-06 15:05 PM 39 0 42
2 2013-08-07 13:38 PM 30 0 43

I am looking to order this table by CardNo and then TransNo but i only want the query to display the record with the highest TransNo for each CardNo. In other words discard the records with the lower TransNo for each CardNo.

My desired result should hopefully look something like this:

CardNo DepDate CurrBal DepAmnt TransNo
1 2013-06-12 10:46 AM 63 0 7
2 2013-08-07 13:38 PM 30 0 43
3 2013-07-22 13:51 PM 11 0 14

I am using SQL 2012 Express but would also like this query to work in SQL 2005.

Please would you guys be so kind as to tell me how too write this query.

Thanks
Stephen