Hi, I really need to know if I am allowed to combine my own custom ads (banners that link to other sites) with google ads. I may have an advertising deal and need to know very soon, Thanks.
You can use google adsense with any other ads but under the condition that they could not look the same the similar. try to color it in the different way and you will be fine. be careful about how many adsense units you show per page as well.
There is no problem having your custom banners ads on your site with adsense. However do not mix it in anyway which will mislead the surfer. Do not put images close to adsense ads for the sole purpose attracting more clicks. Do not put illegal/adult site ads or content on your adsense sites.
else you can use some adserving software which will keep changing the ads each time a visitor comes to your site, this can include google code also, since the adsense tos states you cannot add the same looking ads on a page where adsense ad is served-so it is better to stay out of it
You can use other ads on the same page, yes, as long as they can't be confused with AdSense ads. They have to look different. Also, if search engine rankings are a concern, Google wants you to use "nofollow" on any advertisements so that PR isn't passed through sponsored links. They can penalize your site's rankings otherwise, which is one issue that people using text link ads or the DP co-op have encountered.