REQUEST Asistant
Here, you get a dialog box to choose 'Form' or 'Querystring', depending on what action you chose in your Form. To insert your new variables, you have two options - Automatic and Manual.
If you have gone through the Form Creation process and have 'Grabbed' all the form field names, and they're all generic, you might want to just choose Automatic Variable Creation. This will automatically create variables for all the FormFields it has grabbed (with 'str' in front of the form field name as the name of the variables)
You also have the choice of Manual Variable Creation. This way, you can :

1. Give your variables your own special names, and
2. Choose to add a 'Replace' section of coding after each one. The default code replaces a single quote with two single quotes.

Here you also have the choice of Server Variables (from a pull down list). Here, too, you can click on 'Apply' as many times as needed and then, click 'Exit' to close the box. If you want a structure like:
<% strAgent=Request.ServerVariables("HTTP_USER_AGENT")%>
then, there is a text box where you can enter the variable name.