arise

Congratulations! so happie for you two

thank you so much Gowon, this will really work well for us. thank you

i also find some good imformation from this tread too , it's all about step childs too\
http://www.visajourney.com/forums/topic/363683-stand-alone-i-130-for-stepchildren/page-55

Front-loading isn't meant to help get the petition approved. Front-loading is meant to help at the visa interview. Getting the petition approved only requires that you provide sufficient evidence to prove you've met within the past two years.
Front-loading is meant to accomplish two things at the interview. First, it helps ensure that the consular officer sees your evidence since they aren't required to view any of the relationship evidence you bring to the interview. Second, and probably most important, front-loading is meant to address potential red flags in your case. Red flags are situations that are known to raise the consular officer's level of suspicion at a particular consulate. If any of those red flags exist in your case then the consular officer will probably give your case more scrutiny, and could potentially even deny the visa. If you front-load sufficient evidence to address those red flags, and explain them in a way that reduces or removes any suspicion, then it substantially lowers the ability of the consular officer to deny the visa based on those red flags.
When a consular officer denies a visa then they return the petition to USCIS with the recommendation that the approval of the petition be revoked. Basically, the consular officer is saying that USCIS would never have approved the petition if all the evidence were known. A consular officer doesn't have the authority to re-adjudicate a petition that was approved by USCIS. In other words, they can't return a petition just because they would have made a different decision than the USCIS adjudicator when reviewing the petition for approval. When they deny a visa and return a petition then they are either saying that the beneficiary is clearly ineligible and USCIS screwed up when they approved the petition, or that the evidence for revoking the approval of the petition was discovered after the petition was approved; e.g., at the consular interview. USCIS does occasionally screw up and approve a petition they shouldn't have approved, but most often a petition is returned because the consular officer is saying that the evidence wasn't known to USCIS at the time the petition was approved. Front-loading is a tool to counter this.
In other words, if being introduced by the beneficiary's uncle is considered an indicator of potential fraud at that particular consulate, and the evidence of how the couple were introduced was discovered at the interview, then the consular officer could use it as a basis for denying the visa. On the other hand, if the fact that the couple were introduced by the beneficiary's uncle were included in the front-loaded evidence, and explained that the introduction was 'innocent' and conformed with local social customs, then it would be difficult for the consular officer to use this as a reason to deny the visa. Clearly, if the evidence is included with the petition then the consular officer can't claim USCIS didn't know about it when they approved the petition.
What I'm getting at is don't waste your time packing your petition with piles of chat logs and emails. The CO won't look at it. Carefully choose your front-loaded evidence, and include evidence that either strongly supports the validity of your relationship and that you think it's important for the CO to see, or evidence that addresses specific red flags in your case.