Send content to database using asp by querystring

Hi there,
My problem is this:

I´am sending content from an input text area by querystring to a sqlserver database using asp, so far so good, the problem is that when the content in the text area is to big the output panel trace an error saing that it cannot open the url(in this case the asp file i am using).if i use my_text.htmltext=true in the textarea for example in can use enters put the text in the line i want but if i dont use my_text.htmltext=true the text that i write after i hit a enter to move line above i try to send i gives me the same error, does anyone can tell me how to resolve this

thanks in advance