Reporting Services not working

Hi,
I'm tearing my hair out with this problem, hopefully someone can help me.
When I try to access the Report Manager (http://server/reports/), I get this error:
The attempt to connect to the report server failed. Check your connection information and that the report server is a compatible version.
When I try to access the report server (http://server/reportserver/), I get this error message:
The permissions granted to user 'SERVER\LowPriviligeAccount' are insufficient for performing this operation. (rsAccessDenied) And finally, when I try to deploy a report from inside Visual Studio, I get this error message:

A connection could not be made to the report server http://server/ReportServer.
ADDITIONAL INFORMATION:
The attempt to connect to the report server failed. Check your connection information and that the report server is a compatible version. (Microsoft.ReportingServices.Designer)

The request failed with HTTP status 404: Object Not Found. (Microsoft.ReportingServices.Designer)
Hopefully you can help me!
Thanks in advance!

You need to use the rsconfig command line tool to specify a connection to the Report Server database. If you use a non-service account, it needs to have rights to log on interactively.