1-not change the names on the table for fields
I don't understand, you mean you database column names contain the "fld" prefix, and you want the generated code to have exactly the same name, if this is the case, then you should know that this is LLBLgen Pro default behaviour unless you specified a strip pattern for the EntityFieldNameStripPatter Project Property in the Designer.
If that's not what you want, then definitly i didn't catch what you are after.
2-while coding , easier to set data in fıealds etc..
Could you show soem code examples to prove your point here.