utf-8 in asp is different from utf-8 in aspx

[wau25]

I am upgrading my site form asp 3.0 to .net. Both charset are set to utf-8 but datas entered with 3.0 are not readable by aspx and vice versa. With asp3.0 I never used the N' in my sql statement but the page can save and read data fine. Some of the columns are not event set as nvarchar type, just the regular varchar and the data is still readable by asp 3.0. With aspx I need to both set the column type to nvarchar and use the N' in the statement.

Since they are both utf-8 I can't really use the converter I have to convert the encoding. Does anyone have any soultion to my problem? Any response is appreciated.