Re:
If you got your GC in the last year or so, based on your wife's petition, I'm assuming it definitely is "conditional", i.e. expiring two years from the date of issuance.
As long as you can prove to the INS that you "entered this marriage in good faith" and not to "violate the immigration laws" you shouldn't have a problem getting the I-751 approved, and getting the conditional status removed. However, I would also suggest that you go through a lawyer just in case your wife decides not to cooperate.