Nike is right.... Many factors affect your ability to qualify... for more information, you can visit:
http://www.eaglenationwidemortgagetx.com/

The minimum score as at today is620 to get a loan. A lot of other factors are considered though, in the approval process.
If you don't want a generic answer, you may want to call a Loan Officer and get preapproved based on your specific profile.
Please find out a few things about the condo though - is it Fannie Mae or Freddie Mac or HUD approved? How many units are rented out? Is there a First Right of Refusal for the Condo Association?

These and other questions would affect your ability to buy whether you qualify or not.

Good luck and I hope you find the best resources available to you.

Nike ("Nikki")