Hosting provider only supports .net 2.0 but I developed site
in .net 3.5 with Visual Studios '08

I developed a simple site in VS '08 & it's not working on the www after
uploading to my hosting provider.  I called technical support & they told me
that they only support .net version 2.0 & that my site wasn't displaying b/c
I had developed it with .net version 3.5.

I understand that the newest versions are built on the previous...  But how do I
develop this correctly so that it will work on the www?

I don't need to worry about converting what I've already created.  It's just a
test page displaying a picture so I can start from scratch.  (Should I use VS
'03 or '05 & not '08?  When installing '08 is there a way to choose .net
version 2.0)

Thank you for your help in advance & below is the error message I'm
receiving....
Configuration Error 


Description: An error occurred during the processing of a configuration file
required to service this request. Please review the specific error details below
and modify your configuration file appropriately. 

Parser Error Message: Child nodes not allowed.

Source Error:

Line 91:             <compiler language="c#;cs;csharp"
extension=".cs" warningLevel="4"
Line 92:                       type="Microsoft.CSharp.CSharpCodeProvider,
System, Version=2.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089">
Line 93:                 <providerOption name="CompilerVersion"
value="v3.5"/>
Line 94:                 <providerOption name="WarnAsError"
value="false"/>

Line 95: </compiler>