Hi Wise Guy....
I shud say ...I WAS in the same boat......
I had a terrible GMAT score a month back....
I agree with Bono...try and improve your Quant score and then attack your verbal.....
Quant is easy to improve , comapred to Verbal....
get a 40+ in Quant and then try for Verbal....
First and foremost...get the Kaplan or PR Maths workbook...
go through all the problems...after finishing that book..if u think any basics things still to be done....make sure u clear them....
and then jump on to the Kaplan and PR books and Kaplan prac CD.....and finally give a Quant test ..to C where you are.....
ITS EXTREMELY IMPORTANT TO LEARN THE BASICS FOR QUANT BEFORE AND THEN PRACTISE ,PRACTISE ,PRACTISE !!!!
and your advantage is that u can devote 100% of your time on GMAT..unlike me and most of the ppl here who work full time...
GOOD LUCK...
Never Give up..