CMS Made Simple Forums

My installation of CMSMS 1.5.2 MLE won't upload .bmp files.  I remember a place to set the extensions of files ok to upload but can't seem to find it anywhere.  Can somebody point me in the right direction?

SYSTEM INFO:
Current PHP Version (phpversion):  5.2.9, linux

CMS Version
1.5.2

Installed Modules
CMSMailer
1.73.14

FileManager
0.4.3

MenuManager
1.5.3

ModuleManager
1.2.1

News
2.9.2

nuSOAP
1.0.1

Printing
0.2.6

Search
1.5.2

ThemeManager
1.0.8

TinyMCE
2.4.11

FormBuilder
0.5.11

Play
0.5.2

Quotes
0.1.2

Glossary
0.6.5

This was an issue with upload size after all.  Once I fixed the limit, it worked fine.