I am a US citizen, resident of Maryland who just got married in the
Czech Republic to a Czech citizen ad we plan on living and working in
the Czech Republic. What do I have to do to have my marriage
registered/valid in the United States? ($5.00)

Hi

 You need to have your Marriage Certificate translated by legally
certified translator and then  it must be superlegalised;
 
OR it has to provided with appostille and then translated.

Appostille is cheaper but you may have to explain to US officials what it is.


Make sure translator does not mess-up the dates:

5.6 is fifth July in CR but 6th May in US.


Apostille Information
Apostille Information. Since October 15, 1981, the United States has
been ... The text of the Convention may be found in TIAS 10072; 33 US
Treaty Series ...
www.state.gov/m/a/auth/c1267.htm


An apostille alone is sufficient proof of authentication for notarized
... in the CR · Certification of US Documents with the Apostille for
use in the CR ...
www.zenny.com/KSL/recognition.html

Home in the Czech Republic: Advice for Living in the Czech Republic
The registrar will inform the engaged couple whether superlegalisation
is necessary).
If the documents may not be obtained without serious difficulties, ...
www.en.domavcr.cz/rady.shtml?x=183979


Prague looking for NOTARY - Czech Republic
... BUT - most other countries (don't know about US, though) demands
'superlegalisation',
which is a huge, complicated operation costing a lot more than just USD 30 ... 
www.expatopolis.com/prague/showthread.php?t=47717


Appostille was agreed upon (by Geneva convenction) to simplify the process.
It is faster and cheaper then superlegalisation, but you need to ask the CR
'radnice' to issue it. Both CR and US igned the convention.

certifed translator
://www.google.com/search?q=certified+translation%2C+czech+english&btnG=Search&hl=en&lr=lang_en&safe=off

Congratulations 

Hedgie

Congratulations!
Any wedding legally recognized in the country where it was performed
is recognized by the USA.  Check the answer to this question:

http://answers.google.com/answers/threadview?id=573343

I suspect that registering a marriage is slightly different than it
being legally recognized. Contact the closest U.S. consulate or
embassy, since that is probably where it would have to be done anyway.

Do remember if you have children, to also register their birth at the
same place, since any child may have legal rights if registered.